EXHIBIT 10.5

                                                               EXECUTION VERSION
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                          REGISTRATION RIGHTS AGREEMENT

     This Registration  Rights Agreement (this  "Agreement") is made and entered
into as of October 29, 2004, among Carrizo Oil & Gas, Inc., a Texas  corporation
(the  "Company"),  and the investors  signatory  hereto (each such investor is a
"Purchaser" and all such investors are, collectively, the "Purchasers").

     WHEREAS, the parties have agreed to enter into this Agreement in connection
with,  and as a condition to the Closing  under,  the Note  Purchase  Agreement,
dated  as of the  date  hereof,  among  the  Company  the  Purchasers  and  PCRL
Investments L.P., as Collateral Agent (the "Purchase Agreement");

     NOW, THEREFORE,  IN CONSIDERATION of the mutual covenants contained in this
Agreement,  and for  other  good and  valuable  consideration  the  receipt  and
adequacy of which are hereby acknowledged,  the Company and the Purchasers agree
as follows:

          1.  Definitions.  In addition to the terms  defined  elsewhere in this
Agreement,  (a) capitalized terms that are not otherwise defined herein have the
meanings  given to such terms in the Purchase  Agreement,  and (b) the following
terms have the meanings indicated:

          "Blackout Restriction Period" means, a period beginning on the date on
     which the aggregate number of Registrable  Securities  issued to any holder
     of the Notes  during  the  period of six (6)  consecutive  calendar  months
     immediately  preceding  such  date  and  then  held  on such  date  exceeds
     three-quarters  of one  percent  (.75%)  of the  Common  Stock  issued  and
     outstanding on such date and ending on the date that such holder holds less
     than  sixty-five  one  hundredths of one percent (.65%) of the Common Stock
     issued and outstanding.

          "Current  Value"  means,  with  respect  to  the  calculation  of  the
     liquidated  damages due any Holder pursuant to Section 2(b) hereof, the sum
     of the number of shares of Registrable Securities then owned by such Holder
     multiplied by the Current VWAP Price.

          "Current VWAP Price" means, on any date of  determination,  that price
     which shall be computed as the  arithmetic  average of the Volume  Weighted
     Average  Price of the  Common  Stock  on each of the ten  (10)  consecutive
     Trading  Days  immediately  preceding  (but  not  including),  the  date of
     determination.

          "Damage Notice" means, with respect to any Holder, a written statement
     of all damages,  costs and expenses  incurred by such Holder as a result of
     the failure of the Company to comply with its  obligations  under  Sections
     7(a) or 7(b) hereof.

          "Effective  Date" means that date the initial  Registration  Statement
     becomes effective.

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          "Holder"  means  any  holder,   from  time  to  time,  of  Registrable
     Securities and, so long as any Notes are outstanding, any other holder of a
     Note.

          "Proceeding"  means,  with respect to any Person (i) any insolvency or
     bankruptcy   case  or  proceeding,   or  any   receivership,   liquidation,
     reorganization  or similar  case or  proceeding  in  connection  therewith,
     relative to such  Person,  or to its  assets,  or (ii) any  proceeding  for
     liquidation,  dissolution  or  other  winding  up of such  Person,  whether
     voluntary  or  involuntary  and  whether  or not  involving  insolvency  or
     bankruptcy,  or (iii) any  assignment  for the benefit of  creditors or any
     other marshalling of assets and liabilities of such Person.

          "Prospectus"  means  the  prospectus   included  in  the  Registration
     Statement  (including,  without limitation,  a prospectus that includes any
     information  previously  omitted  from a  prospectus  filed  as  part of an
     effective  registration  statement in reliance  upon Rule 430A  promulgated
     under the  Securities  Act), as amended or  supplemented  by any prospectus
     supplement, with respect to the terms of the offering of any portion of the
     Registrable Securities covered by the Registration Statement, and all other
     amendments and  supplements  to the  Prospectus,  including  post-effective
     amendments,  and all  material  incorporated  by  reference or deemed to be
     incorporated by reference in such Prospectus.

          "Qualified  Registrable  Securities" means any Registrable  Securities
     held by any  Holder  at any  time  such  Holder  is not  permitted  to sell
     Registrable Securities under a Registration Statement.

          "Registrable  Securities"  means any Common  Stock  issued or issuable
     pursuant to the  Documents,  together with any other  securities  issued or
     issuable   upon  any  stock   split,   dividend   or  other   distribution,
     recapitalization  or similar event with respect to the foregoing,  provided
     that the same have not had their  restrictive  legends removed  pursuant to
     Rule 144(k);  provided,  however,  that such securities shall be treated as
     Registrable  Securities  only if and only for so long as they are held by a
     Holder or a permitted transferee pursuant to the terms hereof, and (i) they
     have not been  disposed of pursuant to a  registration  statement  declared
     effective  by  the  Commission,  so  that  all  transfer  restrictions  and
     restrictive  legends with respect to compliance with the Securities Act are
     removed upon the consummation of such transfer,  or (ii) they have not been
     transferred in a transaction  exempt from the  registration  and prospectus
     delivery   requirements  of  the  Securities  Act,  so  that  all  transfer
     restrictions  and  restrictive  legends with respect to compliance with the
     Securities Act are removed upon the consummation of such transfer, or (iii)
     the  registration  rights as to the Holder of such  Registrable  Securities
     have not  terminated  pursuant  to Section  9(m)  unless the failure of the
     Company to comply with its obligations  under Sections 7(a) or 7(b) of this
     Agreement is the reason (directly or indirectly) such  registration  rights
     have not  terminated  in which case such  securities  shall  continue to be
     Registrable Securities.

          "Registration   Statement"   means  a  registration   statement  filed
     hereunder,  including  (in  each  case)  the  Prospectus,   amendments  and
     supplements to such  registration  statement or Prospectus,  including pre-
     and  post-effective  amendments,  all  exhibits


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     thereto,  and all  material  incorporated  by  reference  or  deemed  to be
     incorporated by reference in such registration statement.

          "Repurchasable  Registrable  Securities"  means,  with  respect to any
     Holder on the date of any Repurchase  Notice delivered by such Holder,  the
     Registrable  Securities  then held by such  Holder  that were issued by the
     Company to such Holder within the Repurchase Period.

          "Repurchase  Period" means, with respect to any Repurchase Notice, the
     period of six (6)  consecutive  calendar  months  ending on the Trading Day
     immediately preceding the date of such Repurchase Notice;  provided that if
     during  such six (6) month  period the Holder  delivering  such  Repurchase
     Notice  was  not  permitted  to  sell   Registrable   Securities   under  a
     Registration  Statement for any reason (other than such Holder's failure to
     perform its obligations  hereunder),  or the Common Stock was not listed or
     quoted or was suspended from trading,  or the Company failed for any reason
     to timely deliver any certificate  evidencing any shares of Common Stock as
     required by the Purchase  Agreement or failed to comply with Section 7 or 8
     hereof,  the  commencement  date of such  six (6)  month  period  shall  be
     extended  to an  earlier  date by a number of days  equal to the  aggregate
     number  of days  that  any one or more  of  such  events  or  circumstances
     existed, without duplication.

          "Required Holders" means Holders holding a majority of the Registrable
     Securities, the Purchaser (so long as the Purchaser and its Affiliates hold
     at least ten percent (10%) of the Registrable  Securities then  outstanding
     and/or  Notes   representing  not  less  than  ten  percent  (10%)  of  the
     outstanding  principal  balance of the Notes then  outstanding)  and at any
     time any Notes are outstanding, the Majority Holders.

          "Rule 144" "Rule 144A" "Rule  144(k)" "Rule 415," "Rule 424" and "Rule
     461" means Rule 144,  Rule 144A,  Rule 144(k),  Rule 415, Rule 424 and Rule
     461, respectively, promulgated by the Commission pursuant to the Securities
     Act, as such Rules may be amended from time to time, or any similar rule or
     regulation  hereafter  adopted by the Commission  having  substantially the
     same effect as such Rule.

          "Special Counsel" means one special counsel to the Holders. Unless the
     Holders notify the Company  otherwise,  the Special Counsel will be Gardere
     Wynne Sewell LLP.

          2. Shelf Registration

          (a) As a condition to the delivery of any Stock Payment Notice and the
issuance of shares of Common  Stock to any holder of a Note in  satisfaction  of
all or any portion of the Indebtedness,  the Company shall prepare and file with
the  Commission  a "Shelf"  Registration  Statement  covering  the resale of all
Registrable Securities for an offering to be made on a continuous basis pursuant
to Rule 415.  The  Registration  Statement  shall be on Form S-3  (except if the
Company is not then eligible to register for resale the  Registrable  Securities
on Form S-3,  in which case such  registration  shall be on another  appropriate
form in accordance herewith as the Holders may consent, which consent may not be
unreasonably  withheld) and shall contain  (except if otherwise  directed by the
Holders) the "Plan of Distribution" attached hereto as Annex


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A with such  changes  therein as shall be  required by the  Commission  or as is
necessary to comply with any law, rule or regulation  or, with the prior written
consent of the Required Holders (which may not be unreasonably  withheld), as is
necessary to take into account the plan of  distribution of the Company or other
selling  stockholders.  The  Company  shall  use its best  efforts  to keep such
Registration Statement continuously effective under the Securities Act until the
earliest  of (i) the second  anniversary  of the last  issuance  of  Registrable
Securities to any holder of a Note; (ii) when all Registrable Securities covered
by such Registration Statement have been sold; and (iii) the registration rights
of all Holders of such  Registrable  Securities have expired pursuant to Section
9(m) hereof (the "Effectiveness  Period").  The Company shall notify each Holder
in writing  promptly (and in any event within one business day) after  receiving
notification from the Commission that a Registration Statement has been declared
effective.

          (b) At such time as  Registrable  Securities  are held by any  Holder,
upon the  occurrence  of any Event  (as  defined  below)  at any time  after the
Effective  Date  and on  every  monthly  anniversary  of such  Event  until  the
applicable Event is cured, as partial relief for the damages suffered  therefrom
by such  Holder  (which  remedy  shall not be  exclusive  of any other  remedies
available at law or in equity),  the Company  shall pay to such Holder an amount
in cash,  as damages and not as a penalty,  equal to 1% of the Current  Value of
the Registrable Securities held by such Holder calculated as of the date of such
Event.  The  damages  payable  pursuant  to the terms  hereof  shall  apply on a
pro-rata  basis for any  portion of a month  prior to the cure of an Event.  For
such  purposes,  each of the following  shall  constitute  an event  requiring a
damages payment under this Agreement (an "Event"):

               (i) such Holder is not permitted to sell  Registrable  Securities
          under a  Registration  Statement  for any  reason  for (A) if during a
          Blackout Restriction Period, twenty (20) or more Trading Days (whether
          or not consecutive) per year or (B) at any other time,  thirty (30) or
          more Trading Days (whether or not  consecutive) per year, in each case
          with respect to the foregoing clauses (A) and (B) excluding any period
          in which such Holder is not permitted to sell  Registrable  Securities
          solely (but directly or  indirectly)  as a result of (x) such Holder's
          failure to perform its  obligations  under Section 3(a) or 9(e) hereof
          or (y) the delivery by such Holder to the Company  pursuant to Section
          6(b) hereof of notice of the  occurrence  of an event or  circumstance
          relating  to such  Holder  requiring  the  filing of an  amendment  or
          supplement to a Registration Statement so long as the Company uses its
          best efforts to file and/or cause such  amendment or  supplement to be
          declared  effective (but  including,  without  limitation,  periods in
          which such Holder may not make sales in accordance with the provisions
          of Section  6(a) or Section  6(c) hereof or as a result of the receipt
          of  Confidential  Information as  contemplated by Section 16.15 of the
          Purchase  Agreement);  provided  that  such an Event  shall be  deemed
          "cured"  when and  during  such  period  such  Holder  is able to sell
          Registrable Securities under such Registration Statement;

               (ii) at any time  Registrable  Securities  are  outstanding,  the
          Common Stock is not listed or quoted, or is suspended from trading, on
          an  Eligible  Market  for a period  of at least  five (5)  consecutive
          Trading Days provided that such an Event shall be deemed  "cured" when
          and during such  period such Common  Stock is so listed and quoted and
          not suspended from trading; or

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               (iii) the Company  fails for any reason to deliver a  certificate
          evidencing  any  shares of Common  Stock  issued to such  Holder or to
          provide required letters of instruction  within three (3) Trading Days
          after  delivery  of  such  certificate   and/or  required  letters  of
          instruction is required pursuant to any Document (other than a Section
          7 Event described in Section 2(d) hereof); provided that such an Event
          shall be deemed  "cured"  upon the  delivery of such  certificate  (it
          being  understood no such delivery shall be required until the Company
          has received any opinion,  payment of transfer  taxes,  if any, or any
          other documentation contemplated by the Documents).

          (c) If at any time  Registrable  Securities  are  outstanding  (i) any
Event  (other than an Event  described  in Section  2(b)(i) at any time during a
Blackout  Restriction Period) occurs and remains uncured for 30 days or (ii) any
Event  described in Section  2(b)(i) above occurs during a Blackout  Restriction
Period  and  remains  uncured  for twenty  (20) days,  then at any time or times
thereafter  any  Holder  may  deliver  to the  Company a notice  (a  "Repurchase
Notice")  requiring  the  Company  to  repurchase  all  or  any  portion  of the
Repurchasable  Registrable  Securities  then  specified  by such  Holder in such
Repurchase  Notice at a price per share equal to (x) the Interest Payment Price,
Voluntary  Redemption  Price or the Maturity Date Price,  as the case may be, at
which  such  Repurchasable  Registered  Securities  were  issued to such  Holder
divided by (y) 0.90 (the "Repurchase  Price"). If a Holder delivers a Repurchase
Notice pursuant to this Section,  the Company shall pay the aggregate Repurchase
Price  (together with any other payments,  expenses and liquidated  damages then
due and  payable  pursuant  to the  this  Agreement,  but net of any  liquidated
damages previously paid to such Holder) to such Holder in cash no later than the
tenth (10th) day  following the date of delivery of the  Repurchase  Notice (the
"Repurchase   Date"),  and  upon  receipt  thereof  such  Holder  shall  deliver
certificates evidencing the Registrable Securities so repurchased to the Company
(to the extent such certificates have been delivered to such Holder).

          Notwithstanding  the repurchase  rights granted to each Holder in this
Section 2(c),  the Company shall not be required to repurchase  shares of Common
Stock on the  Repurchase  Date to the extent that (i) after giving effect to the
repurchase,  the Company would be insolvent,  (ii) the net assets of the Company
are less  than the  amount of the  proposed  repurchase  or (iii)  funds are not
otherwise legally available  therefor under the Texas Business  Corporation Act,
as from time to time amended  (together with any successor law, the "TBCA").  In
the event that any of the circumstances  described in the foregoing clauses (i),
(ii) or (iii) prevents the purchase of such shares of Common Stock,  the Company
shall repurchase that portion of such shares of Common Stock of each Holder that
may be  repurchased by the Company  without  causing any such  circumstances  to
occur ratably on the Repurchase  Date based on the aggregate  repurchase  amount
payable  with  respect to such  shares of Common  Stock then to be  repurchased.
Notwithstanding  the  foregoing,  in the event the  Company is the debtor in any
Proceeding,  each Holder may file a proof of claim in such  Proceeding  and seek
and obtain a recovery on such claim in accordance with Applicable Law regardless
of whether any of the circumstances described in the foregoing clauses (i), (ii)
or (iii)  would  prevent the  repurchase  by the Company of any shares of Common
Stock the Company is otherwise obligated to repurchase under this Section 2(c).

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          If a  Repurchase  Notice  is  given  and  the  Company  is  unable  to
repurchase all of the Common Stock on the  Repurchase  Date that are the subject
of such notice  because (i) after giving  effect to the  repurchase  the Company
would be insolvent,  (ii) the net assets of the Company are less than the amount
of the proposed  redemption  or (iii) funds are not legally  available  therefor
under the TBCA, the obligation of the Company to repurchase any shares of Common
Stock on the  Repurchase  Date  shall  continue  until the  first  date on which
Company is not  prohibited  to repurchase  such Common Stock in accordance  with
this  Section  at which  date the  Company  shall be  obligated  to  immediately
repurchase such shares of Common Stock in accordance with the provisions hereof.

          (d) If at any time  Registrable  Securities  are  outstanding  and the
Company  fails to comply with  Section  7(a) or 7(b) hereof with  respect to any
Holder,  unless the  Company is unable to comply with such  Section  solely (but
directly  or  indirectly)  as a result of such  Holder's  failure to perform its
obligations  under such Section (a "Section 7 Event"),  the Company shall pay to
such  Holder  the actual  damages  suffered  by such  Holder as a result of such
Section 7 Event. Such payment shall be made by the Company to such Holder within
10 days of delivery of a Damage Notice by a Holder.

          (e) If at any time  Registrable  Securities  are  outstanding  and the
Company fails to timely file its periodic filings with the Commission (including
any safe harbors provided by Form 8-K and grace periods pursuant to Rule 12b-25)
pursuant  to Section 8 hereof and such  failure  remains  uncured for 10 Trading
Days (a "Periodic  Filing  Event"),  then the Company shall be  obligated,  upon
receipt  of a  Repurchase  Notice  from any  Holder,  to  repurchase  all of the
Repurchasable Registrable Securities issued to such Holder by the Company during
the ninety days immediately preceding the date of the Periodic Filing Event that
is specified in a Repurchase Notice at a price per share equal to the Repurchase
Price.  Such amount  shall be paid to such  Holder no later than the  Repurchase
Date.  Additionally,  if the  Company's  failure to comply with Section 8 hereof
continues  for an  additional  10 Trading Days beyond the Periodic  Filing Event
specified  in such  Repurchase  Notice,  then the Company  shall be obligated to
repurchase all Repurchasable Registrable Securities issued to such Holder by the
Company  in the  time  period  of the  ninety-one  to one  hundred  eighty  days
immediately  preceding  the date of such  Periodic  Filing  Event at a price per
share equal to the Repurchase Price. Such amount shall be paid no later than ten
(10) days after the end of such additional 10 Trading Day period.

          (f)  Payments  made to any Holder  pursuant to Sections  2(d) and 2(e)
hereof shall be such Holder's  exclusive remedy for the damages resulting from a
Section 7 Event or a Periodic Filing Event. To the extent that a Section 7 Event
or a  Periodic  Filing  Event  relates  to  only a  portion  of the  Registrable
Securities, the obligation to pay damages and the repurchase obligation provided
hereunder with respect to a Section 7 Event or a Periodic  Filing Event shall be
payable only with respect to such portion of such Registrable Securities.

          3.   Registration   Procedures.   In  connection  with  the  Company's
registration obligations hereunder, the Company shall:

          (a) Not less than three (3) Trading Days (or one (1) Trading Day prior
to any filing of a  supplement  or  amendment  of a  Registration  Statement  or
Prospectus)  prior to the initial filing of each  Registration  Statement or any
related Prospectus  (excluding any document


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that would be incorporated  or deemed to be incorporated  therein by reference),
the Company shall (i) furnish to the Holders and their Special Counsel copies of
all such  documents  proposed  to be filed,  (other than those  incorporated  or
deemed to be incorporated  by reference)  which documents will be subject to the
review of such Holders and their  Special  Counsel,  and (ii) cause its officers
and directors,  counsel and independent  certified public accountants to respond
to such inquiries as shall be necessary, in the reasonable opinion of respective
counsel,  to  conduct a  reasonable  investigation  within  the  meaning  of the
Securities Act. Except as otherwise  required by law, the Company shall not file
a Registration Statement or any such Prospectus or any amendments or supplements
thereto to which the Required Holders and their Special Counsel shall reasonably
object  provided the Company is notified of such  objection  within a reasonable
time taking into account the business and legal  exigencies but in any event not
less than the second  Trading Day (or one (1) Trading Day prior to any filing of
a supplement or amendment of a Registration  Statement or Prospectus)  after the
Holders have been so furnished  copies of such document.  The parties agree that
if the  Holders or the  Special  Counsel  shall fail to provide  comments to the
Company or their  counsel to a proposed  Registration  Statement  or  Prospectus
within a reasonable time taking into account the business and legal  exigencies,
but in any event not less than the second  Trading  Day (or one (1)  Trading Day
prior to any filing of a supplement or amendment of a Registration  Statement or
Prospectus)  following the date on which they received the same for review, then
the Company may proceed with the registration process without such comments. The
time  periods  under this  Section  3(a)  applicable  to any period prior to the
Effective  Date shall be  shortened to the extent that failure by the Company to
file a document with the  Commission  could cause the Company to be in violation
of any law, rule,  regulation or contract and such restrictions  shall not apply
if the amendment or supplement  relates  solely to an  underwritten  offering by
another selling shareholder of the Company or by the Company for its own account
in which the  Holders  are not  participating.  No delay in filing of  documents
beyond the periods  specified in this Section 3(a) that are solely  attributable
to the review by a Holder or Special  Counsel for the periods  specified  herein
shall  contribute  to  determining  whether an Event has occurred nor counted in
determining the length of a time period with respect to an Event.

          (b) (i) To the  extent  Registrable  Securities  are  outstanding  and
subject to Section 6(c),  prepare and file with the Commission such  amendments,
including  post-effective  amendments,  to any  Registration  Statement  and the
Prospectus  used  in  connection  therewith  as  may  be  necessary  to  keep  a
Registration  Statement  effective  to  the  extent  required  hereby  as to the
applicable  Registrable  Securities for the Effectiveness Period and prepare and
file with the Commission  such  additional  Registration  Statements in order to
register for resale under the Securities Act all of the Registrable  Securities;
(ii) cause the related  Prospectus to be amended or supplemented by any required
Prospectus supplement, and as so supplemented or amended to be filed pursuant to
Rule  424;  (iii)  use  reasonable  best  efforts  to  respond  as  promptly  as
practicable but in any event within twenty (20) calendar days of receipt, to any
comments received from the Commission with respect to the Registration Statement
or any  amendment  thereto and as promptly as  reasonably  possible  provide the
Holders  true  and  complete  copies  of  all  correspondence  from  and  to the
Commission  relating to the  Registration  Statement except those relating to an
underwritten  offering  by the  Company  for its own  account  or other  selling
shareholders of the Company in which the Holders are not participating; and (iv)
comply in all material  respects with the  provisions of the  Securities Act and
the Exchange Act with respect to the disposition of all  Registrable  Securities
covered  by the  Registration  Statement  during  the


                                       7


Effectiveness  Period in accordance with the intended  methods of disposition by
the Holders thereof set forth in the Registration  Statement as so amended or in
such Prospectus as so supplemented.

          (c) To the extent any Registrable  Securities are then outstanding and
subject to Section 6(c), notify the Holders of Registrable Securities to be sold
and their Special Counsel as promptly as reasonably possible,  and (if requested
by any such Person) confirm such notice in writing no later than one Trading Day
thereafter,  of any of the following  events:  (i) the  Commission  notifies the
Company whether there will be a "review" of any Registration Statement; (ii) the
Commission comments in writing on any Registration  Statement (in which case the
Company  shall  deliver to each  Holder and the  Special  Counsel a copy of such
comments  and of all  written  responses  thereto  except  those  relating to an
underwritten  offering  by the  Company  for its own  account  or other  selling
shareholders of the Company in which the Holders are not  participating);  (iii)
any  Registration   Statement  or  any  post-effective   amendment  is  declared
effective;  (iv) the  Commission  or any  other  Federal  or state  governmental
authority  requests any amendment or supplement to a  Registration  Statement or
Prospectus  or  requests  additional   information  related  thereto;   (v)  the
Commission   issues  any  stop  order   suspending  the   effectiveness  of  any
Registration  Statement or initiates any Proceedings for that purpose;  (vi) the
Company receives notice of any suspension of the qualification or exemption from
qualification of any Registrable Securities for sale in any jurisdiction, or the
initiation  or threat of any Action  for such  purpose;  or (vii) the  financial
statements  included  in  any  Registration   Statement  become  ineligible  for
inclusion  therein  or any  statement  made  in any  Registration  Statement  or
Prospectus or any document  incorporated or deemed to be incorporated therein by
reference  is untrue in any material  respect or any revision to a  Registration
Statement,  Prospectus or other document is required so that it will not contain
any untrue  statement  of a  material  fact or omit to state any  material  fact
required to be stated  therein or necessary to make the statements  therein,  in
light of the circumstances under which they were made, not misleading.

          (d) To the extent any Registrable  Securities are then outstanding and
subject to Section  6(c),  use its best  efforts to avoid the issuance of or, if
issued,  obtain the withdrawal of (i) any order suspending the  effectiveness of
any  Registration  Statement or (ii) any  suspension  of the  qualification  (or
exemption from  qualification) of any of the Registrable  Securities for sale in
any jurisdiction, at the earliest practicable moment.

          (e) Furnish to each Holder and their Special Counsel,  without charge,
at least one conformed  copy of each  Registration  Statement and each amendment
thereto,   including   financial   statements  and   schedules,   all  documents
incorporated or deemed to be incorporated therein by reference, and all exhibits
to the extent requested by such Person (including those previously  furnished or
incorporated by reference)  promptly after the filing of such documents with the
Commission.

          (f) Promptly deliver to each Holder and their Special Counsel, without
charge, as many copies of the Prospectus or Prospectuses (including each form of
prospectus)  and each  amendment  or  supplement  thereto  as such  Persons  may
reasonably  request.  Subject  to the  provisions  hereof,  the  Company  hereby
consents to the use of such Prospectus and each amendment or supplement  thereto
by each of the selling  Holders in connection  with the offering


                                       8


and  sale of the  Registrable  Securities  covered  by such  Prospectus  and any
amendment  or  supplement  thereto to the extent  permitted by federal and state
securities laws and regulations.

          (g) Use its best efforts to list the Registrable Securities covered by
such Registration Statement on an Eligible Market.

          (h) Prior to any public  offering of Registrable  Securities,  use its
best  efforts to register or qualify or cooperate  with the selling  Holders and
their Special Counsel in connection with the registration or  qualification  (or
exemption  from  such   registration  or   qualification)  of  such  Registrable
Securities  for offer and sale  under  the  securities  or Blue Sky laws of such
jurisdictions  within the United  States as any Holder  reasonably  requests  in
writing,   to  keep  each  such  registration  or  qualification  (or  exemption
therefrom) effective during the Effectiveness Period and to do any and all other
acts or things  reasonably  requested in writing that are necessary or advisable
to enable the disposition in such  jurisdictions  of the Registrable  Securities
covered by a  Registration  Statement  provided,  that the Company  shall not be
required to qualify  generally  to do business or qualify as a dealer or consent
to service of process in any  jurisdiction  where it is not now so  qualified or
has not so  consented  or subject  the Company to any  material  tax in any such
jurisdiction where it is not then so subject.

          (i) Cooperate  with the Holders to facilitate  the timely  preparation
and delivery of certificates representing Registrable Securities to be delivered
to a transferee pursuant to a Registration  Statement,  which certificates shall
be free, to the extent  permitted by the Documents  and  applicable  law, of all
restrictive  legends,  and to enable such  Registrable  Securities to be in such
denominations and registered in such names as any such Holders may request.

          (j)  Subject  to  Section  6(c),  upon  the  occurrence  of any  event
described in Section  3(c)(vii) or receipt of information from a Holder pursuant
to the second  sentence of Section 6(b), use its best efforts to, as promptly as
reasonably  practicable,   prepare  a  supplement  or  amendment,   including  a
post-effective  amendment,  to the Registration Statement or a supplement to the
related  Prospectus or any document  incorporated  or deemed to be  incorporated
therein  by  reference,  and file  any  other  required  document  so  that,  as
thereafter  delivered,  neither the  Registration  Statement nor such Prospectus
will contain an untrue  statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements  therein,
in light of the circumstances under which they were made, not misleading.

          (k)  Cooperate  with  any   reasonable  due  diligence   investigation
undertaken by the Holders in connection with the sale of Registrable Securities,
including  without  limitation  by making  available  any  reasonably  requested
documents and information.

          (l)  Notwithstanding  anything to the contrary  contained herein,  the
Registration  Statement  may  not be used by the  Holders  for any  underwritten
offering,  nor may such Holders participate in any underwritten  offering by the
Company or any other selling shareholders under a Registration Statement.

          (m)  Comply  with  all  applicable   rules  and   regulations  of  the
Commission.

          4.  Registration  Expenses.  All fees  and  expenses  incident  to the
performance  of or compliance  with this Agreement by the Company shall be borne
by the Company whether or


                                       9


not any  Registrable  Securities are sold pursuant to a Registration  Statement.
The fees and  expenses  referred to in the  foregoing  sentence  shall  include,
without  limitation,  (a) all registration  and filing fees (including,  without
limitation,  fees and expenses  (i) with respect to filings  required to be made
with  any  Eligible  Market,  and  (ii)  in  compliance  with  applicable  state
securities  or  Blue  Sky  laws  (including,   without   limitation,   fees  and
disbursements   of  counsel  for  the  Company  in  connection   with  Blue  Sky
qualifications or exemptions of the Registrable  Securities and determination of
the eligibility of the Registrable  Securities for investment  under the laws of
such  jurisdictions  as  requested  by  the  Holders),   (b)  printing  expenses
(including,   without   limitation,   expenses  of  printing   certificates  for
Registrable Securities and of printing prospectuses  reasonably requested by the
Holders),  (c)  messenger,   telephone  and  delivery  expenses,  (d)  fees  and
disbursements of counsel for the Company and one Special Counsel for the Holders
and (e) fees and  expenses  of all other  Persons  retained  by the  Company  in
connection  with  the  consummation  of the  transactions  contemplated  by this
Agreement;  provided, that the Company shall have no obligation or liability for
any  underwriting  discounts,  selling  commissions  and  stock  transfer  taxes
applicable to the securities registered for resale by the Holders and, except as
set forth above, any fees and disbursements of counsel for any Holder.

          5. Indemnification

          (a) Indemnification by the Company. The Company shall, notwithstanding
any termination of this Agreement,  indemnify and hold harmless each Holder, the
officers,  directors,  partners, members, agents, brokers (including brokers who
offer and sell  Registrable  Securities  as principal as a result of a pledge or
any failure to perform under a margin call of Common Stock), investment advisors
and employees of each of them,  each Person who controls any such Holder (within
the meaning of Section 15 of the  Securities  Act or Section 20 of the  Exchange
Act) and the officers,  directors,  partners,  members,  agents and employees of
each such controlling Person, to the fullest extent permitted by applicable law,
from  and  against  any and all  losses,  claims,  damages,  liabilities,  costs
(including,  without limitation,  costs of preparation and reasonable attorneys'
fees and  disbursements)  and  expenses,  including  expenses  of  investigation
(collectively,  "Losses"), as incurred, arising out of or relating to any untrue
or alleged  untrue  statement of a material fact  contained in the  Registration
Statement,  any  Prospectus  or any form of  prospectus  or in any  amendment or
supplement  thereto  or in any  preliminary  prospectus,  or  arising  out of or
relating to any omission or alleged  omission of a material  fact required to be
stated therein or necessary to make the  statements  therein (in the case of any
Prospectus  or form  of  prospectus  or  supplement  thereto,  in  light  of the
circumstances under which they were made) not misleading,  except to the extent,
but only to the extent,  that (i) such untrue  statements or omissions are based
solely  upon  information  regarding  such  Holder  furnished  in writing to the
Company by such Holder or the Special Counsel  expressly for use therein,  or to
the  extent  that such  information  relates  to such  Holder  or such  Holder's
proposed method of  distribution of Registrable  Securities and was reviewed and
expressly  approved in writing by such Holder or the Special  Counsel  expressly
for use in a Registration Statement,  such Prospectus or such form of Prospectus
or in any amendment or supplement thereto ("Holder  Information") or (ii) in the
case  of  an  occurrence   of  an  event  of  the  type   specified  in  Section
3(c)(v)-(vii),  the use by such Holder of an outdated  or  defective  Prospectus
after the Company has  notified  such Holder in writing that the  Prospectus  is
outdated  or  defective  and prior to the  receipt by such  Holder of the Advice
contemplated  in Section 6(b). The Company shall notify the Holders  promptly of
the


                                       10


institution,  threat or assertion of any Action of which the Company is aware in
connection with the transactions contemplated by this Agreement.

          (b) Indemnification by Holders.  Each Holder shall,  severally and not
jointly,  indemnify  and hold  harmless the Company,  its  directors,  officers,
agents and employees,  each Person who controls the Company  (within the meaning
of Section 15 of the Securities Act and Section 20 of the Exchange Act), and the
directors,  officers,  agents or employees of such controlling  Persons,  to the
fullest  extent  permitted by  applicable  law,  from and against all Losses (as
determined by a court of competent  jurisdiction in a final judgment not subject
to appeal or review)  arising  solely out of any untrue  statement of a material
fact contained in any  Registration  Statement,  any Prospectus,  or any form of
prospectus,  or in any amendment or supplement thereto, or arising solely out of
any omission of a material  fact  required to be stated  therein or necessary to
make the  statements  therein  not  misleading  to the  extent,  but only to the
extent,  that such untrue  statement or omission is contained in any information
so furnished in writing by such Holder to the Company specifically for inclusion
in such  Registration  Statement  or such  Prospectus.  In no  event  shall  the
liability of any selling  Holder  hereunder be greater in amount than the dollar
amount  of the  net  proceeds  received  by such  Holder  upon  the  sale of the
Registrable Securities giving rise to such indemnification obligation.

          (c) Conduct of  Indemnification  Proceedings.  If any action  shall be
brought or asserted  against  any Person  entitled to  indemnity  hereunder  (an
"Indemnified  Party"),  such Indemnified  Party shall promptly notify the Person
from whom  indemnity is sought (the  "Indemnifying  Party") in writing,  and the
Indemnifying Party shall assume the defense thereof, including the employment of
counsel reasonably  satisfactory to the Indemnified Party and the payment of all
reasonable  fees and  expenses  incurred in  connection  with  defense  thereof;
provided,  that the failure of any  Indemnified  Party to give such notice shall
not relieve the Indemnifying Party of its obligations or liabilities pursuant to
this  Agreement,  except  (and  only) to the  extent  that it  shall be  finally
determined  by a court of competent  jurisdiction  (which  determination  is not
subject to appeal or further  review) that such failure  shall have  proximately
and materially adversely prejudiced the Indemnifying Party.

     An Indemnified Party shall have the right to employ separate counsel in any
such  Proceeding  and to participate  in the defense  thereof,  but the fees and
expenses of such counsel  shall be at the expense of such  Indemnified  Party or
Parties  unless:  (i) the  Indemnifying  Party has agreed in writing to pay such
fees and expenses;  or (ii) the Indemnifying Party shall have failed promptly to
assume  the  defense  of  such  proceeding  and  to  employ  counsel  reasonably
satisfactory  to such  Indemnified  Party in any such  proceeding;  or (iii) the
named parties to any such proceeding  (including any impleaded  parties) include
both such  Indemnified  Party and the  Indemnifying  Party, and such Indemnified
Party shall have been  advised by counsel  that a conflict of interest is likely
to exist if the same counsel were to represent  such  Indemnified  Party and the
Indemnifying  Party (in which  case,  if such  Indemnified  Party  notifies  the
Indemnifying  Party in writing that it elects to employ separate  counsel at the
expense of the Indemnifying  Party,  the  Indemnifying  Party shall not have the
right to assume the defense  thereof and such counsel shall be at the expense of
the  Indemnifying  Party)  provided  that the  Indemnifying  Party shall have no
liability for more than one such separate  counsel for all  Indemnified  Parties
and local counsel. The Indemnifying Party shall not be liable for any settlement
of any such action effected without its written consent, which consent shall not
be unreasonably withheld. No


                                       11


Indemnifying  Party shall,  without the prior written consent of the Indemnified
Party,  effect  any  settlement  of any  pending  action in respect of which any
Indemnified Party is a party,  unless such settlement  includes an unconditional
release of such  Indemnified  Party from all  liability  on claims  that are the
subject matter of such proceeding.

     All fees and expenses of the Indemnified  Party (including  reasonable fees
and  expenses  to the  extent  incurred  in  connection  with  investigating  or
preparing  to defend  such  Proceeding  in a manner not  inconsistent  with this
Section) shall be paid to the Indemnified Party, as incurred, within ten Trading
Days of written notice thereof to the Indemnifying  Party (regardless of whether
it is  ultimately  determined  that an  Indemnified  Party  is not  entitled  to
indemnification  hereunder;  provided,  that the Indemnifying  Party may require
such  Indemnified  Party to undertake to reimburse all such fees and expenses to
the extent it is finally  judicially  determined that such Indemnified  Party is
not entitled to indemnification hereunder).

          (d) Contribution. If the indemnification under Section 5(a) or 5(b) is
held by a court of competent  jurisdiction  to be  unavailable to an Indemnified
Party (by reason of public policy or otherwise) with respect to any Losses, then
each Indemnifying  Party, in lieu of indemnifying such Indemnified  Party, shall
contribute to the amount paid or payable by such  Indemnified  Party as a result
of such Losses,  in such  proportion as is  appropriate  to reflect the relative
fault of the  Indemnifying  Party on one hand and the  Indemnified  Party on the
other in connection  with the actions,  statements or omissions that resulted in
such  Losses,  as well  as any  other  relevant  equitable  considerations.  The
relative fault of such Indemnifying Party on one hand and such Indemnified Party
on the other shall be determined  by reference  to, among other things,  whether
any action in  question,  including  any untrue or alleged  untrue  statement of
material fact or omission or alleged omission to state a material fact,  relates
to information supplied by such Indemnifying Party or Indemnified Party, and the
parties'  relative intent,  knowledge,  access to information and opportunity to
correct or prevent  such  action,  statement  or  omission.  The amount  paid or
payable by an  Indemnified  Party as a result of any  Losses  shall be deemed to
include, subject to the limitations set forth in Section 5(c), any attorneys' or
other  fees or  expenses  reasonably  incurred  by  such  Indemnified  Party  in
connection with any action to the extent such party would have been  indemnified
for such fees or expenses if the indemnification  provided for in this Section 5
was available to such party in accordance with its terms.

     The  parties  hereto  agree  that it  would  not be just and  equitable  if
contribution  pursuant  to  this  Section  5(d)  were  determined  by  pro  rata
allocation or by any other method of allocation  that does not take into account
the equitable considerations referred to in the immediately preceding paragraph.
Notwithstanding the provisions of this Section 5(d), no Holder shall be required
to contribute, in the aggregate, any amount in excess of the amount by which the
proceeds  actually  received  by such  Holder  from the sale of the  Registrable
Securities  subject to the action  exceeds the amount of any  damages  that such
Holder has  otherwise  been  required to pay by reason of such untrue or alleged
untrue statement or omission or alleged omission. No Person guilty of fraudulent
misrepresentation  (within the meaning of Section 11(f) of the  Securities  Act)
shall be  entitled  to  contribution  from any Person who was not guilty of such
fraudulent misrepresentation.

     The indemnity and contribution  agreements contained in this Section are in
addition  to any  liability  that  the  Indemnifying  Parties  may  have  to the
Indemnified Parties.

                                       12


          (e) THE  PARTIES  HERETO  INTEND  THAT THE  INDEMNITIES  SET  FORTH IN
SECTION 5 BE CONSTRUED AND APPLIED AS WRITTEN ABOVE  NOTWITHSTANDING ANY RULE OF
CONSTRUCTION TO THE CONTRARY.  WITHOUT  LIMITING THE FOREGOING,  THE INDEMNITIES
SHALL TO THE FULLEST EXTENT ALLOWED BY LAW,  APPLY  NOTWITHSTANDING  ANY STATE'S
"EXPRESS  NEGLIGENCE  RULE" OR SIMILAR RULE THAT WOULD DENY COVERAGE BASED ON AN
INDEMNIFIED  PERSON'S  SOLE,   CONCURRENT  OR  CONTRIBUTORY  ACTIVE  OR  PASSIVE
NEGLIGENCE  OR STRICT  LIABILITY.  IT IS THE INTENT OF THE PARTIES  THAT, TO THE
EXTENT  PROVIDED IN SECTION 5, THE  INDEMNITIES  SET FORTH HEREIN SHALL,  TO THE
FULLEST EXTENT ALLOWED BY LAW, APPLY TO AN INDEMNIFIED PERSON'S SOLE, CONCURRENT
OR CONTRIBUTORY  ACTIVE OR PASSIVE  NEGLIGENCE OR STRICT LIABILITY.  THE PARTIES
AGREE THAT THIS PROVISION IS "CONSPICUOUS" FOR PURPOSES OF ALL STATE LAWS.

          6. Holder Covenants

          (a) Each Holder agrees that,  upon receipt of any written  notice from
the Company of (i) the  happening of any event  requiring the  preparation  of a
supplement or amendment to a prospectus  relating to  Registrable  Securities so
that, as thereafter  delivered to such Holder,  such prospectus will not contain
an  untrue  statement  of a  material  fact or omit to state any  material  fact
required to be stated  therein or necessary to make the  statements  therein not
misleading or (ii) the  occurrence of an event of the kind described in Sections
3(c)(v),   3(c)(vi)  or  3(c)(vii),   each  Holder  will  forthwith  discontinue
disposition of Registrable  Securities  pursuant to the Registration  Statements
until its receipt of copies of the  supplemented or amended  prospectus from the
Company as  contemplated  by Section 3(j) or until it is advised in writing (the
"Advice") by the Company that use of the  applicable  Prospectus  may be resumed
and, in either  case,  has received  copies of any  additional  or  supplemental
filings that are  incorporated or deemed to be incorporated by reference in such
Prospectus or Registration Statement. If so directed by the Company, each Holder
shall deliver to the Company all copies,  other than  permanent file copies then
in  such  Holder's  possession,  of the  prospectus  covering  such  Registrable
Securities that is current at the time of receipt of such notice.

          (b) The Holder(s)  included in any  registration  shall furnish to the
Company such information  regarding such Holder(s),  the Registrable  Securities
owned by such Holders and the  distribution  proposed by such Holder(s),  as the
Company may  reasonably  request in writing and as shall be reasonably  required
under  applicable  law in connection  with any  registration,  qualification  or
compliance  referred  to in this  Agreement.  Each  Holder  agrees to notify the
Company of the  occurrence of any event  relating to such Holder which  requires
the  preparation  of a supplement  or amendment to such  prospectus  so that, as
thereafter  delivered to the  purchasers of  Registrable  Securities  the Holder
Information  with respect to such Holder in such  prospectus will not contain an
untrue  statement of a material fact or omit to state any material fact required
to be stated therein or necessary to make the statements  therein not misleading
relating to such Holder,  and such Holder shall promptly  deliver to the Company
information  necessary to enable the Company to prepare any such  supplement  or
amendment.  Each  Holder  agrees  not to take any  action  with  respect  to any
distribution  deemed to be made  pursuant to such  registration  statement  that
constitutes  a violation  of  Regulation  M under the  Exchange Act or any other
applicable rule, regulation or law.

                                       13


          (c) Each  Holder  acknowledges  and agrees that it will not effect any
public sale or distribution of Registrable Securities pursuant to a Registration
Statement at any time that the Company shall have advised the Holders in writing
that the sale by such Holders pursuant to such Registration  Statement should be
suspended,  which may be  utilized  by the  Company  for any  reason,  including
without  limitation,  to facilitate an offering of the Company's  securities for
its own account.  The Company may provide appropriate stop orders to enforce the
provisions of this Section 6(c).


          7. Rule 144 and Rule 144(k) Requirements.

          (a)  Rule  144.  At any time and  from  time to time  after  Qualified
Registrable  Securities become eligible for sale under Rule 144, upon receipt by
the Company of (i) written  notice  from any Holder of such  Holder's  desire to
sell Qualified  Registrable  Securities  pursuant to Rule 144 and (ii) a written
representation  from  each  of  such  Holder  and  its  selling  broker  in form
reasonably  satisfactory  to  the  Company  that  each  has  complied  with  the
requirements   of  Rule  144  in  connection  with  such  sale  and  such  other
documentation  as is  reasonably  satisfactory  to the  Company  (the  "Rule 144
Documentation"),  the Company shall cause its legal counsel to deliver a letter,
reasonably  acceptable  to such  Holder,  to the  Company,  such  Holder and the
Company's  transfer  agent  stating  that the  transfer  may be made free of the
restrictive legend limiting  transferability  under the Securities Act and cause
its transfer  agent to clear the sale of such Qualified  Registrable  Securities
within 3 Trading  Days of receipt of the Rule 144  Documentation  by the Company
and  receipt  of the  physical  certificates  representing  such  shares  by the
Company's  transfer  agent.  Unless  otherwise  requested by the  Company,  such
Holder(s) shall deliver the original  physical  certificates  representing  such
shares to the Company's transfer agent directly.

          (b)  Rule  144(k).  At any  time  and  from  time  to time  after  any
Registrable  Securities become eligible for sale under Rule 144(k),  each Holder
of such Registrable Securities may deliver to the Company written notice of such
Holder's  desire  to have  the  restrictive  legend  removed  from  certificates
representing such Registrable  Securities  pursuant to Rule 144(k). Upon receipt
of such written notice and  presentation by such Holder of  documentation  as is
reasonably  satisfactory  to the Company that such  Registrable  Securities  are
eligible for removal of the  restrictive  legend on such shares pursuant to Rule
144(k) (the "Rule  144(k)  Documentation"),  the  Company  shall cause its legal
counsel to deliver to the Company,  such Holder and the Company's transfer agent
a letter,  reasonably acceptable to such Holder, stating that the removal of the
restrictive  legend on the subject  shares of Common Stock by the transfer agent
is  appropriate  under the  Securities Act and shall cause its transfer agent to
remove  the  restrictive  legend  from  such  shares  or to make an entry in the
Company's share transfer records in the event the shares without the restrictive
legend are to be held in book-entry form in the Depository  Trust Company system
within three (3) Trading Days of receipt of the Rule 144(k) Documentation by the
Company and receipt of the physical certificates  representing the shares by the
Company's  transfer  agent.  Unless  otherwise  requested by the  Company,  such
Holder(s) shall deliver the original  physical  certificates  representing  such
shares to the Company's transfer agent directly.

                                       14


          8.  Public  Reporting.   So  long  as  any  Holder  holds  Registrable
Securities, the Company shall remain current in its public reporting obligations
under the Exchange Act and the rules of any Eligible  Market on which the Common
Stock is then either  listed or quoted and  otherwise  shall  fulfill all of its
obligations  in order for the provisions of Rule 144 and 144A to be available to
such Holder for the sale of such Common Stock.

          9. Miscellaneous

          (a)  Remedies.  In addition to being  entitled to exercise  all rights
provided herein or granted by law,  including  recovery of damages,  each of the
Holders and the Company  will be  entitled  to specific  performance  under this
Agreement.  The  parties  agree  that  monetary  damages  may  not  be  adequate
compensation  for any loss  incurred  by  reason of any  breach  of  obligations
described in the foregoing sentence and hereby agrees to waive in any action for
specific  performance  of any such  obligation  the defense that a remedy at law
would be adequate. In addition,  the Company hereby acknowledges and agrees that
its duties and  obligations  under this  Agreement are secured by the Collateral
and that, in addition to any other remedies  available at law or in equity,  the
Holders may exercise the rights and remedies under the Security Documents in the
event the Company  fails to comply with its  obligations  under this  Agreement,
including Section 2(c) hereof.

          (b) Amendments and Waivers.

               (i) No failure or delay of the Holders in exercising any power or
          right  hereunder  shall  operate  as a waiver  thereof,  nor shall any
          single  or  partial  exercise  of any  such  right  or  power,  or any
          abandonment  or  discontinuance  of steps to  enforce  such a right or
          power,  preclude any other or further exercise thereof or the exercise
          of any other  right or power.  The rights and  remedies of the Holders
          hereunder are  cumulative  and not exclusive of any rights or remedies
          which they would  otherwise  have.  No waiver of any provision of this
          Agreement or consent to any departure by the Company  therefrom  shall
          in any event be  effective  unless  the same  shall be  authorized  as
          provided  in  paragraph  (ii)  below,  and then such waiver or consent
          shall be effective  only in the specific  instance and for the purpose
          for which given.  No notice or demand on the Company in any case shall
          entitle  the  Company  to any  other or  further  notice  or demand in
          similar or other circumstances.

               (ii)  Neither  this  Agreement  nor any  provision  hereof may be
          waived,  amended  or  modified  except  pursuant  to an  agreement  or
          agreements  in writing  entered  into by the Company and the  Required
          Holders; provided that no such amendment, waiver or modification shall
          (a)  change  any  of  the  provisions  of  this  Section  9(b)  or the
          definition  of  "Required  Holders"  or  any  other  provision  hereof
          specifying  the number or  percentage  of Holders  required  to waive,
          amend or modify  any rights  hereunder  or make any  determination  or
          grant any  consent  hereunder,  without  the  written  consent of each
          Holder or (b)  increase  the  obligations  of any Holder or  otherwise
          disproportionately  adversely  affect  any of the rights of any Holder
          under this  Agreement,  without the written  consent of each  Investor
          affected thereby.

                                       15


          (c) No  Inconsistent  Agreements.  Neither  the Company nor any of its
Subsidiaries has entered, as of the date hereof, nor shall the Company or any of
its  Subsidiaries,  on or  after  the  date of this  Agreement,  enter  into any
agreement with respect to its securities that would have the effect of impairing
the rights granted to the Holders in this Agreement or otherwise  conflicts with
the provisions  hereof.  Except as and to the extent specified in the applicable
schedule to the Purchase  Agreement,  neither the Company nor any Subsidiary has
previously  entered into any  agreement  granting any  registration  rights with
respect to any of its  securities to any Person that have not been  satisfied in
full.

          (d) No Piggyback on Registrations.  Neither the Company nor any of its
security  holders (other than the Holders in such capacity  pursuant hereto) may
include securities of the Company in the Registration  Statements filed pursuant
to this Agreement other than the Registrable Securities.

          (e) Compliance.  Each Holder  covenants and agrees that it will comply
with the  prospectus  delivery  requirements  of the  Securities  Act and  other
requirements of the Exchange Act as applicable to it in connection with sales of
Registrable Securities pursuant to the Registration  Statement.  Notwithstanding
anything to the  contrary  contained  herein the holders  shall  transfer  their
Registrable  Securities  only  in  accordance  with  the  Plan  of  Distribution
contained  therein,  and the Company shall have no  responsibility  for any such
failure of Holder to so comply,  for the failure of such transfer to comply with
applicable law nor for any delay associated with the filing of any document with
the Commission or the clearance of comments to the extent solely attributable to
the Plan of Distribution requested by the Holders.

          (f)  Notices.  All  notices,  demands  and  requests of any kind to be
delivered to any party hereto in  connection  with this  Agreement  shall be (a)
delivered  personally,  (b) sent by nationally recognized overnight courier, (c)
sent by first class,  registered or certified mail,  return receipt requested or
(d) sent by facsimile, in each case to such party at its address as set forth in
the  Purchase  Agreement.  Any  notice,  demand or  request so  delivered  shall
constitute  valid notice under this  Agreement  and shall be deemed to have been
received (A) on the day of actual delivery in the case of personal delivery, (B)
on the next  Business  Day after the date when sent in the case of  delivery  by
nationally-recognized overnight courier, (C) on the fifth Business Day after the
date of deposit in the U.S.  mail in the case of mailing or (D) upon  receipt in
the case of a facsimile  transmission  or e-mail  communication,  on the date of
such facsimile  transmission or e-mail communication or the next Business Day if
such day is not a Business Day provided that  confirmation of such  transmission
or  communication  is received by the sending  party.  Any party hereto may from
time to time by notice in writing served upon the other as aforesaid designate a
different  mailing  address  or a  different  person to which all such  notices,
demands or requests thereafter are to be addressed.

          (g)  Successors  and Assigns.  Whenever in this  Agreement  any of the
parties  hereto is referred  to, such  reference  shall be deemed to include the
successors and permitted assigns of such party, and all covenants,  promises and
agreements  by or on behalf of the Company or the Holders that are  contained in
this  Agreement  shall  bind  and  inure  to the  benefit  of  their  respective
successors  and permitted  assigns  except that the Company shall not assign its
rights or  obligations  hereunder  without the consent of the Required  Holders.
Each  Holder  shall have the right to assign or  otherwise  transfer  its rights
under  this  Agreement  in the  manner  and to


                                       16


the extent  permitted  under the  Purchase  Agreement  provided  that:  (i) such
transfer may  otherwise be effected in  accordance  with  applicable  securities
laws,  (ii) unless such  assignee or  transferee  is a Holder,  such assignee or
transferee  acquires  (a)  Notes in an  aggregate  principal  amount of at least
$3,000,000,  or (b) Registrable Securities consisting of at least 250,000 shares
of Common  Stock  (subject  to  appropriate  adjustment  for any  stock  splits,
dividends, subdivisions, combinations, recapitalizations and the like) and (iii)
the Holder  notifies  the  Company in writing  of the  transfer  or  assignment,
stating the name and the address of the  transferee or assignee and  identifying
the  securities  with  respect  to which  such  registration  rights  are  being
transferred  or assigned and the assignee or transferee  agrees in writing to be
bound by the provisions of this Agreement.

          (h)  Counterparts.  This  Agreement  may be  executed  in two or  more
counterparts,  each of which shall  constitute an original but all of which when
taken  together  shall  constitute  but one  contract.  In the  event  that  any
signature is delivered by facsimile transmission,  such signature shall create a
valid and binding  obligation  of the party  executing  (or on whose behalf such
signature  is  executed)  the same  with the same  force  and  effect as if such
facsimile signature page were an original thereof.

          (i) Governing Law; Waiver Of Jury Trial. All questions  concerning the
construction,  validity,  enforcement and interpretation of this Agreement shall
be governed by and construed  and enforced in accordance  with the internal laws
of the State of Texas,  without  regard to the  principles  of  conflicts of law
thereof.  Each party  hereto  hereby  irrevocably  waives to the fullest  extent
permitted by applicable law personal  service of process and consents to process
being served in any such suit,  action or  proceeding  by mailing a copy thereof
via  registered  or  certified  mail or  overnight  delivery  (with  evidence of
delivery)  to such party at the  address in effect for  notices to it under this
Agreement  and agrees that such service  shall  constitute  good and  sufficient
service of process and notice thereof.  Nothing contained herein shall be deemed
to limit in any way any right to serve  process in any manner  permitted by law.
If any  provision of this  Agreement  shall be invalid or  unenforceable  in any
jurisdiction,  such invalidity or unenforceability shall not affect the validity
or enforceability of the remainder of this Agreement in that jurisdiction or the
validity or  enforceability  of any  provision  of this  Agreement  in any other
jurisdiction. Each party hereto hereby irrevocably waives, to the fullest extent
permitted  by  applicable  law,  any and all right to trial by jury in any legal
proceeding  arising out of or relating to this Agreement or any of the Documents
or the  transactions  contemplated  hereby or  thereby.  If either  party  shall
commence an action or proceeding to enforce any  provisions of this Agreement or
any Document,  then the prevailing  party in such action or proceeding  shall be
reimbursed  by the  other  party  for its  reasonable  attorneys  fees and other
reasonable costs and expenses incurred with the  investigation,  preparation and
prosecution of such action or proceeding.

          (j) Cumulative  Remedies.  The remedies provided herein are cumulative
and not exclusive of any remedies provided by law.

          (k)  Severability.  If any  provision of this  Agreement is held to be
invalid or unenforceable in any respect,  the validity and enforceability of the
remaining  terms  and  provisions  of  this  Agreement  shall  not in any way be
affected or impaired  thereby and the parties


                                       17


will  attempt  to  agree  upon a  valid  and  enforceable  provision  that  is a
reasonable  substitute  therefor,  and upon so agreeing,  shall incorporate such
substitute provision in this Agreement.

          (l)  Headings.  Article  and  Section  headings  used  herein  are for
convenience of reference only and are not to affect the  construction  of, or to
be taken into consideration in interpreting, this Agreement.

          (m)  Termination.  The  registration  rights granted  pursuant to this
Agreement  shall  terminate as to any  Registrable  Securities and the Holder of
such  Registrable  Securities as such (but not as to that Holder with respect to
any Registrable  Securities,  the registration rights of which have not expired)
at such  time  that  such  Registrable  Securities  either  (i) have  had  their
restrictive  legends  removed  pursuant  to Rule  144(k)  and  such  Registrable
Securities are freely transferable  without restriction under the Securities Act
or (ii) may  have  their  restrictive  legend  removed  in  accordance  with the
provisions  of Rule 144(k)  upon the request of such Holder  pursuant to Section
7(b) hereof and the performance by such Holder of its obligations  under Section
7(b) and upon removal of such  restrictive  legend such  Registrable  Securities
will be freely  transferable  without  restriction  under the Securities Act, or
(iii) have been transferred  under a Registration  Statement or pursuant to Rule
144 (including Rule 144(k)). Notwithstanding the termination of the registration
rights granted pursuant to this Agreement,  all other obligations of the Company
and the Holder  hereunder not pertaining to the registration of such Registrable
Securities,  including without limitation, Section 2 (but no amount shall become
payable in respect of Common  Stock as to any Event that  occurs  after the time
such shares cease to be Registrable Securities), Section 5 and Sections 7(b) and
7(c) hereof but excluding,  without limitation,  Section 3 hereof, shall survive
the termination of such registration rights.













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                           SIGNATURE PAGES TO FOLLOW]





     IN WITNESS  WHEREOF,  the parties have  executed this  Registration  Rights
Agreement as of the date first written above.



                                             CARRIZO OIL & GAS, INC.


                                             By: /s/ PAUL F. BOLING
                                                 ------------------
                                             Name: Paul F. Boling
                                             Title:   Vice President and
                                                      Chief Financial Officer







                   [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK
                    SIGNATURE PAGES OF PURCHASERS TO FOLLOW]






                                             PCRL Investments L.P.


                                             By: /s/ WILLIAM E. ROSE
                                                 -------------------
                                             Name: William E. Rose
                                             Title:   Authorized Signatory


                                             Address for Notice:

                                             PCRL Investments L.P.
                                             c/o HBK Investments L.P.
                                             350 Park Avenue 19th Floor
                                             New York, New York  10022
                                             Attention:   Ken Hirsh
                                             Facsimile:   (212) 446-1941

                                             With a copy to:

                                             HBK Investments L.P.
                                             300 Crescent Court, Suite 700
                                             Dallas, Texas  75201
                                             Attention:  Legal Department
                                             Facsimile:  (214) 758-1207

                                             And with copies (which shall
                                             not constitute notice) to:

                                             Gardere Wynne Sewell LLP
                                             1601 Elm Street, Suite 3000
                                             Dallas, Texas  75201-4761
                                             Facsimile No.: (214) 999-3341
                                             Telephone No.: (214) 999-4341
                                             Attn:  Gary B. Clark, Esq.





                                                                         Annex A

                              Plan of Distribution

     The selling  stockholders  may, from time to time, sell any or all of their
shares of common  stock on any stock  exchange,  market or trading  facility  on
which the shares are traded or in private  transactions.  These  sales may be at
fixed or negotiated prices. The selling  stockholders may use any one or more of
the following methods when selling shares:

o    ordinary brokerage transactions and transactions in which the broker-dealer
     solicits purchasers;

o    block trades in which the broker-dealer  will attempt to sell the shares as
     agent but may  position  and resell a portion of the block as  principal to
     facilitate the transaction;

o    purchases by a broker-dealer  as principal and resale by the  broker-dealer
     for its account;

o    an exchange  distribution  in accordance  with the rules of the  applicable
     exchange;

o    privately negotiated transactions;

o    short sales;

o    broker-dealers may agree with the selling  stockholders to sell a specified
     number of such shares at a stipulated price per share;

o    a combination of any such methods of sale; and

o    any other method permitted pursuant to applicable law.

     The  selling  stockholders  may also sell  shares  under Rule 144 under the
Securities Act, if available, rather than under this prospectus.

     The selling  stockholders  may also engage in short sales  against the box,
puts and calls and other  transactions  in our  securities or derivatives of our
securities and may sell or deliver shares in connection with these trades.

     Broker-dealers  engaged by the selling  stockholders  may arrange for other
brokers-dealers to participate in sales.  Broker-dealers may receive commissions
or discounts from the selling  stockholders  (or, if any  broker-dealer  acts as
agent  for the  purchaser  of  shares,  from the  purchaser)  in  amounts  to be
negotiated.  The  selling  stockholders  do not  expect  these  commissions  and
discounts to exceed what is customary in the types of transactions involved. Any
profits on the  resale of shares of common  stock by a  broker-dealer  acting as
principal might be deemed to be underwriting  discounts or commissions under the
Securities  Act.  Discounts,   concessions,   commissions  and  similar  selling
expenses,  if any, attributable to the sale of shares will be borne by a selling
stockholder.  The selling  stockholders may agree to indemnify any


                                       18


agent, dealer or broker-dealer that participates in transactions involving sales
of the shares if  liabilities  are imposed on that person  under the  Securities
Act.

     The selling  stockholders  may from time to time pledge or grant a security
interest in some or all of the shares of common stock owned by them and, if they
default in the performance of their secured obligations, the pledgees or secured
parties  may offer and sell the  shares of common  stock from time to time under
this  prospectus  after  we have  filed a  supplement  or an  amendment  to this
prospectus under Rule 424(b)(3) or other applicable  provision of the Securities
Act of 1933  amending the list of selling  stockholders  to include the pledgee,
transferee or other  successors in interest as selling  stockholders  under this
prospectus.

     The selling  stockholders  also may  transfer the shares of common stock in
other circumstances, in which case the transferees, pledgees or other successors
in  interest  will  be the  selling  beneficial  owners  for  purposes  of  this
prospectus  and may sell the shares of common stock from time to time under this
prospectus  after we have filed a supplement or an amendment to this  prospectus
under Rule 424(b)(3) or other applicable provision of the Securities Act of 1933
amending the list of selling stockholders to include the pledgee,  transferee or
other successors in interest as selling stockholders under this prospectus.

     The selling stockholders and any broker-dealers or agents that are involved
in selling the shares of common stock may be deemed to be "underwriters"  within
the meaning of the Securities Act in connection  with such sales. In such event,
any commissions  received by such broker-dealers or agents and any profit on the
resale  of the  shares  of common  stock  purchased  by them may be deemed to be
underwriting commissions or discounts under the Securities Act.

     We are required to pay all fees and expenses  incident to the  registration
of the shares of common stock,  including the fees and  disbursements of counsel
to  the  selling   stockholders.   We  have  agreed  to  indemnify  the  selling
stockholders against certain losses, claims, damages and liabilities,  including
liabilities under the Securities Act.

     The selling  stockholders  have  advised us that they have not entered into
any  agreements,   understandings  or  arrangements  with  any  underwriters  or
broker-dealers  regarding the sale of their shares of common stock, nor is there
an underwriter or coordinating  broker acting in connection with a proposed sale
of shares of common stock by any selling stockholder.  If we are notified by any
selling  stockholder that any material  arrangement has been entered into with a
broker-dealer for the sale of shares of common stock, if required,  we will file
a supplement to this prospectus. If the selling stockholders use this prospectus
for any  sale of the  shares  of  common  stock,  they  will be  subject  to the
prospectus delivery requirements of the Securities Act.

     The  anti-manipulation  rules of Regulation M under the Securities Exchange
Act of 1934 may apply to sales of our common stock and activities of the selling
stockholders.