REGISTRATION RIGHTS AGREEMENT


            THIS  REGISTRATION  RIGHTS  AGREEMENT (the  "Agreement") is made and
entered into as of September  14, 2000,  by and among  Infocast  Corporation,  a
Nevada   corporation  (the   "Company"),   and  Sun   Microsystems,   Inc.  (the
"Purchaser").

            In order to induce the  Purchaser  to enter into the Stock  Purchase
Agreement,  dated as of the date hereof,  between the Company and the  Purchaser
(the "Purchase  Agreement"),  the Company has agreed to provide the registration
rights  set  forth in this  Agreement.  The  execution  of this  Agreement  is a
condition to the Closing under the Purchase Agreement.

            The parties hereby agree as follows:

1.          Definitions.

            Capitalized  terms used herein without  definition  shall have their
respective  meanings  set  forth  in the  Purchase  Agreement.  As  used in this
Agreement, the following terms shall have the following meanings:

            (a) "Affiliate"  means, with respect to any Person, any Person that,
directly or  indirectly,  controls,  is controlled by or is under common control
with such Person.  For the purposes of this  definition,  "control"  (including,
with correlative  meanings,  the terms "controlled by" and "under common control
with"),  as used with respect to any Person,  means the possession,  directly or
indirectly,  of the power to direct or cause the direction of the management and
policies of such Person, whether through the ownership of voting securities,  by
contract or otherwise.

            (b) "Commission" means the Securities and Exchange Commission or any
successor thereto.

            (c) "Common  Stock"  means the common  stock,  par value  $0.001 per
share, of the Company.

            (d) "Effectiveness  Date" means the date that is 120 days after each
Closing Date under the Purchase Agreement.

            (e)  "Exchange  Act" means the  Securities  Exchange Act of 1934, as
amended, and the rules and regulations of the Commission promulgated thereunder.

            (f) "Filing  Date" means the date that is 60 days after each Closing
Date under the Purchase Agreement.

            (g) "Prospectus"  means the prospectus  included in any Registration
Statement   (including,   without   limitation,   a  prospectus  that  discloses
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,






including,  without limitation, with respect to the terms of the offering of any
portion of the Registrable Securities covered by such 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.

            (h) "Registrable Securities" means shares of Common Stock issued and
sold under the  Purchase  Agreement  or pursuant to the exercise of the Warrant,
upon original  issuance thereof and at all times subsequent  thereto,  until, in
the case of any such share of Common  Stock,  (i) it is  effectively  registered
under the  Securities  Act and disposed of in accordance  with the  Registration
Statement covering it, (ii) it is salable by the holder thereof pursuant to Rule
144 within any three-month  period without  limitations on volume or (iii) it is
distributed to the public pursuant to Rule 144.

            (i) "Registration Statement" means any registration statement of the
Company that covers any of the Registrable Securities pursuant to the provisions
of this Agreement, including the Prospectus,  amendments and supplements to such
registration statement,  including post-effective  amendments, all exhibits, and
all material incorporated by reference or deemed to be incorporated by reference
in such registration statement.

            (j) "Rule 144" means Rule 144  promulgated by the  Commission  under
the  Securities  Act,  as such Rule may be  amended  from  time to time,  or any
similar Rule or regulation hereafter adopted by the Commission.

            (k) "Rule 415" means Rule 415 as promulgated by the Commission under
the  Securities  Act,  as such Rule may be  amended  from  time to time,  or any
similar Rule or regulation hereafter adopted by the Commission.

            (l)  "Securities  Act" means the Securities Act of 1933, as amended,
and the rules and regulations of the Commission promulgated thereunder.

            (m)   "Shelf   Registration"   means   either  the   Initial   Shelf
Registration,  the Second Shelf Registration or a Subsequent Shelf Registration,
as appropriate.

            (n) "Special  Counsel"  means Wilson Sonsini  Goodrich & Rosati,  or
such other special counsel to the holders of the Registrable Securities as shall
be specified by the holders of a majority in aggregate  principal  amount of the
Registrable  Securities,  the fees and expenses (not to exceed $20,000) of which
will be paid by the Company  pursuant  to Section 5 hereof.  There shall be only
one Special Counsel.

            (o)  "Warrant"  shall mean the Warrant,  dated  September  14, 2000,
issued by the Company to the Purchaser.

2.          Shelf Registration.

            (a) The  Company  shall  prepare  and  file  with the  Commission  a
Registration Statement for an offering to be made on a continuous basis pursuant
to Rule 415 covering the resale from time to time by the holders  thereof of the
Registrable Securities,  which shall include (subject to the


                                      -2-



limitations  of law,  including  Regulation  M) the  shares of Common  Stock (i)
acquired by the  Purchaser  at the First  Closing  (as  defined in the  Purchase
Agreement)  and  (ii) to be  acquired  upon the  exercise  of the  Warrant  (the
"Initial Shelf Registration"). Upon a Second Closing (as defined in the Purchase
Agreement),  if any, the Company  shall  prepare and file with the  Commission a
Registration Statement for an offering to be made on a continuous basis pursuant
to Rule 415 covering the resale from time to time by the holders  thereof of the
Registrable Securities,  which shall include the shares of Common Stock acquired
by the Purchaser at the Second  Closing (the "Second Shelf  Registration").  The
Initial Shelf  Registration and the Second Shelf  Registration  shall be on Form
S-1 or another  appropriate  form permitting  registration  of such  Registrable
Securities for resale by such holders. The Company shall use its best efforts to
cause the Initial Shelf  Registration  and the Second Shelf  Registration  to be
filed  with the  Commission  on or before  the  Filing  Date and to be  declared
effective under the Securities Act on or prior to the Effectiveness  Date and to
keep  the  Initial  Shelf   Registration  and  the  Second  Shelf   Registration
continuously  effective  under the Securities Act until the date that is 2 years
(or for such  other  time  period as shall be  specified  in Rule  144(k) as the
holding  period  required for  termination of certain  restrictions  on sales of
restricted  securities  by persons other than  affiliates)  from the date of the
latest of the (x) last Closing under the Purchase Agreement or (y) last purchase
of  shares  of  Common   Stock   through  the   exercise  of  the  Warrant  (the
"Effectiveness  Period"), or such shorter period ending when (i) all Registrable
Securities  covered by the  Initial  Shelf  Registration  and the  Second  Shelf
Registration have been sold, or (ii) a Subsequent Shelf Registration (as defined
in Section 2(b))  covering all of the  Registrable  Securities has been declared
effective  under the Securities  Act, or (iii) there cease to be outstanding any
Registrable Securities.

            (b) If the Initial Shelf Registration, the Second Shelf Registration
or any Subsequent  Shelf  Registration  ceases to be effective for any reason at
any time during the Effectiveness  Period (other than because of the sale of all
of the securities registered thereunder), the Company shall use its best efforts
to obtain  the  prompt  withdrawal  of any order  suspending  the  effectiveness
thereof,   and  in  any  event  shall  within  30  days  of  such  cessation  of
effectiveness  amend the Shelf  Registration in a manner reasonably  expected to
obtain the withdrawal of the order suspending the effectiveness thereof, or file
an additional "shelf"  Registration  Statement pursuant to Rule 415 covering all
of  the  Registrable  Securities  (a  "Subsequent  Shelf  Registration").  If  a
Subsequent  Shelf  Registration is filed, the Company shall use its best efforts
to cause the Subsequent Shelf  Registration to be declared  effective as soon as
practicable  after  such  filing  and  to  keep  such   Registration   Statement
continuously effective until the end of the Effectiveness Period.

            (c) The Company shall supplement and amend the Shelf Registration or
Subsequent  Shelf  Registration,  as the case may be, if  required by the rules,
regulations  or  instructions  applicable to the  registration  form used by the
Company for such Shelf  Registration,  if required by the Securities  Act, or if
reasonably  requested by the holders of a majority in aggregate principal amount
of the Registrable Securities.

3.          Company Registration.

            (a) If the Company  shall  determine  to register  any of its equity
securities,  other than (i) a registration  relating solely to employee  benefit
plans, (ii) a registration relating solely to a Rule 145 transaction, or (iii) a
registration in which the only equity security being  registered is Common Stock

                                      -3-



issuable upon  conversion of convertible  debt  securities  which are also being
registered, the Company will:

                  (i)  promptly  give to each holder of  Registrable  Securities
written notice thereof; and

                  (ii)   include   in  such   registration   (and  any   related
qualifications including compliance with Blue Sky laws), and in any underwriting
involved therein, all the Registrable  Securities specified in a written request
or  requests,  made  within 20 days after the date of  receipt  of such  written
notice from the Company, by any holder of Registrable Securities.

            (b) If a holder of Registrable Securities decides not to include all
of its Registrable  Securities in any such registration  statement,  such holder
shall  nevertheless  continue  to have the  right  to  include  any  Registrable
Securities in any subsequent  registration statement or registration  statements
filed by the Company with respect to offerings of its  securities,  all upon the
terms and conditions set forth herein.

            (c) The  registration  rights  set  forth  in this  Section  3 shall
terminate  with  respect  to shares of Common  Stock  sold  pursuant  to (i) the
Purchase  Agreement,  on the second  anniversary  of the Second Closing Date (as
such term is defined in the Purchase  Agreement)  and (ii) the  Warrant,  on the
fifth anniversary of the date of this Agreement.

4.  Registration  Procedures.  In  connection  with the  Company's  registration
obligations  under  Sections  2 and 3 hereof,  the  Company  shall  effect  such
registration to permit the sale of the Registrable Securities in accordance with
the method or methods of  disposition  thereof  intended  by the holders of such
Registrable  Securities (except that the Company shall not be required to effect
any registration pursuant to Section 2 involving an underwriting),  and pursuant
thereto the Company shall as expeditiously as practicable:

            (a) Prepare and file with the Commission a Registration Statement or
Registration  Statements  on any  appropriate  form  under  the  Securities  Act
available for the sale of the  Registrable  Securities by the holders thereof in
accordance with the intended method or methods of distribution  thereof, and use
its best efforts to cause each such  Registration  Statement to become effective
and remain effective as provided herein;  provided,  that before filing any such
Registration  Statement or Prospectus or any amendments or  supplements  thereto
(other than documents that would be  incorporated  or deemed to be  incorporated
therein by reference and that the Company is required by  applicable  securities
laws or stock  exchange  requirements  to file) the Company shall furnish to the
Special  Counsel  copies  of all such  documents  proposed  to be  filed,  which
documents will be subject to the review of such Special Counsel and the holders,
and the Company  shall not file any such  Registration  Statement  or  amendment
thereto or any  Prospectus or any amendment or  supplement  thereto  (other than
such  documents  which,  upon  filing,  would be  incorporated  or  deemed to be
incorporated by reference therein and that the Company is required by applicable
securities laws or stock exchange  requirements to file) to which the holders of
a majority in aggregate  principal amount of the Registrable  Securities covered
by such Registration Statement or the Special Counsel shall reasonably object on
a timely basis.

                                      -4-



            (b)  Prepare  and  file  with the  Commission  such  amendments  and
post-effective  amendments to each Registration Statement as may be necessary to
keep such  Registration  Statement  continuously  effective  for the  applicable
period  specified  in Section 2; cause the related  Prospectus  to be amended or
supplemented  by any required  amendment  or  Prospectus  supplement,  and as so
amended  or  supplemented  to be  filed  pursuant  to Rule  424 (or any  similar
provisions  then in  force)  under  the  Securities  Act;  and  comply  with the
provisions  of  the  Securities  Act  with  respect  to the  disposition  of all
securities  covered by such Registration  Statement during the applicable period
in accordance  with the methods of disposition  intended by the holders  thereof
set forth in such Registration  Statement as so amended or in such Prospectus as
so amended or supplemented.

            (c)  Notify  the  Special   Counsel  and  any  selling   holders  of
Registrable  Securities promptly,  and (if requested by any such Person) confirm
such notice in writing,  (i) when a Prospectus or any  Prospectus  supplement or
post-effective  amendment has been filed,  and,  with respect to a  Registration
Statement or any post-effective  amendment,  when the same has become effective,
(ii) of any request by the Commission or any other federal or state governmental
authority during the period of  effectiveness of the Registration  Statement for
amendments or supplements to a Registration  Statement or related  Prospectus or
for additional information, (iii) of the issuance by the Commission or any other
federal  or state  governmental  authority  of any  stop  order  suspending  the
effectiveness  of a Registration  Statement or the initiation of any proceedings
for that purpose,  (iv) of the receipt by the Company of any  notification  with
respect to the suspension of the  qualification or exemption from  qualification
of any  of the  Registrable  Securities  for  sale  in any  jurisdiction  or the
initiation  or  threatening  of any  proceeding  for  such  purpose,  (v) of the
existence of any fact or the  happening  of any event which makes any  statement
made in such  Registration  Statement  or  related  Prospectus  or any  document
incorporated  or deemed to be  incorporated  therein by reference  untrue in any
material   respect  or  which  requires  the  making  of  any  changes  in  such
Registration  Statement,  Prospectus  or documents  so that,  in the case of the
Registration  Statement,  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 not misleading, and that in the case of
the Prospectus,  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 the light of the circumstances under which they
were made, not misleading,  and (vi) of the Company's  reasonable  determination
that  a   post-effective   amendment  to  a  Registration   Statement  would  be
appropriate.

            (d) Use all reasonable efforts to obtain the withdrawal of any order
suspending the effectiveness of a Registration  Statement, or the lifting of 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)  If  reasonably  requested  by  the  holders  of a  majority  in
aggregate  principal  amount  of the  Registrable  Securities  being  sold,  (i)
promptly incorporate in a Prospectus supplement or post-effective amendment such
information  as the Company or the holders of a majority in aggregate  principal
amount of such  Registrable  Securities  agree  should be  included  therein  as
required by applicable  law, (ii) make all required  filings of such  Prospectus
supplement or such  post-effective  amendment as soon as  practicable  after the
Company has  received  notification  of the matters to be  incorporated  in such
Prospectus supplement or post-effective  amendment, and (iii) supplement or make
amendments  to any  Registration  Statement  consistent  with clause (i) or (ii)
above;  provided,

                                      -5-



that the Company  shall not be required to take any actions  under this  Section
4(e) that are not,  in the  opinion  of  outside  counsel  for the  Company,  in
compliance with applicable law.

            (f) Furnish to each selling holder of Registrable Securities and the
Special Counsel, upon request and without charge, at least one conformed copy of
the  Registration  Statement  or  Statements  and any  post-effective  amendment
thereto,  including financial statements (but excluding schedules, all documents
incorporated or deemed to be incorporated therein by reference and all exhibits,
unless requested in writing by such holder or counsel).

            (g) Deliver to each selling holder of Registrable Securities and the
Special  Counsel,   without  charge,   as  many  copies  of  the  Prospectus  or
Prospectuses relating to such Registrable Securities (including each preliminary
prospectus)  and  any  amendment  or  supplement  thereto  as such  Persons  may
reasonably  request;  and  the  Company  hereby  consents  to the  use  of  such
Prospectus  or each  amendment  or  supplement  thereto  by each of the  selling
holders of  Registrable  Securities in connection  with the offering and sale of
the  Registrable  Securities  covered by such  Prospectus  or any  amendment  or
supplement thereto.

            (h) Prior to any  public  offering  of  Registrable  Securities,  to
register  or qualify  or  cooperate  with the  selling  holders  of  Registrable
Securities and their  respective  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 seller reasonably requests
in  writing;   keep  each  such  registration  or  qualification  (or  exemption
therefrom)  effective during the period such Registration  Statement is required
to be kept  effective  and do any and all  other  acts or  things  necessary  or
advisable to enable the  disposition in such  jurisdictions  of the  Registrable
Securities covered by the applicable Registration Statement;  provided, that the
Company  will not be  required to (i)  qualify  generally  to do business in any
jurisdiction  where it is not then so  qualified  or (ii) take any  action  that
would subject it to general service of process in any such jurisdiction where it
is not then so subject.

            (i) Cause  the  Registrable  Securities  covered  by the  applicable
Registration  Statement  to  be  registered  with  or  approved  by  such  other
governmental  agencies or authorities within the United States, except as may be
required solely as a consequence of the nature of such selling holder,  in which
case the Company will  cooperate in all  reasonable  respects with the filing of
such  Registration  Statement  and the  granting  of such  approvals,  as may be
necessary to enable the seller or sellers  thereof to consummate the disposition
of such Registrable Securities.

            (j) Upon the occurrence of any event contemplated by Section 4(c)(v)
or 4(c)(vi)  above,  prepare a supplement  or  post-effective  amendment to each
Registration  Statement or an amendment or supplement to the related  Prospectus
or any document  incorporated  therein by  reference or file any other  required
document (such as a Current Report on Form 8-K) so that, as thereafter delivered
to the purchasers of the  Registrable  Securities  being sold  thereunder,  such
Prospectus  will not 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 the light of the  circumstances  under  which they were
made, not misleading.

                                      -6-



            (k) If necessary in  connection  with a disposition  of  Registrable
Securities,  make available for  inspection,  at the offices where normally kept
during  reasonable  business  hours,  by a  representative  of  the  holders  of
Registrable  Securities  being sold and any attorney or  accountant  retained by
such selling holders, financial and other records, pertinent corporate documents
and  properties  of the  Company  and its  subsidiaries  as they may  reasonably
request, and cause the officers,  directors and employees of the Company and its
subsidiaries  to  supply  all  information  reasonably  requested  by  any  such
representative,  attorney or  accountant in  connection  with such  disposition;
provided, that any records,  information or documents that are designated by the
Company in writing as  confidential  at the time of  delivery  of such  records,
information or documents shall be kept  confidential  by such Persons,  and such
Persons  shall so agree in  writing,  unless (i) such  records,  information  or
documents  are in the  public  domain  or  otherwise  publicly  available,  (ii)
disclosure  of such  records,  information  or documents is required by court or
administrative  order or is  necessary  to respond to  inquiries  of  regulatory
authorities  or (iii)  disclosure of such records,  information  or documents is
otherwise  required  by law  (including,  without  limitation,  pursuant  to the
requirements of the Securities Act).

            (l)  Comply  with  all  applicable  rules  and  regulations  of  the
Commission  and  make  generally  available  to  its  security  holders  earning
statements  satisfying the provisions of Section 11(a) of the Securities Act and
Rule 158 thereunder (or any similar Rule  promulgated  under the Securities Act)
no later than 45 days after the end of any 12-month period (or 90 days after the
end of any 12-month  period if such period is a fiscal year)  commencing  on the
first day of the first fiscal  quarter of the Company,  after the effective date
of a Registration Statement, which statements shall cover said 12-month periods.

            (m) Unless any  Registrable  Securities  shall be in book-entry only
form, cooperate with the selling holders of Registrable Securities to facilitate
the timely  preparation  and delivery of certificates  representing  Registrable
Securities to be sold and not bearing any restrictive  legends;  and enable such
Registrable  Securities to be in such denominations and registered in such names
as the holders may request.

            (n) Provide the  transfer  agent for the Common  Stock with  printed
certificates  for the  Registrable  Securities  which are in a form eligible for
deposit with The Depository Trust Company.

            (o) Cause the Common Stock to be listed on each securities  exchange
or quotation  system on which the Company's Common Stock is then listed no later
than  the  date  the  Registration  Statement  is  declared  effective  and,  in
connection therewith,  to the extent applicable,  to make such filings under the
Exchange Act and to have such filings declared effective thereunder.

            The  Company  may  require  each  selling   holder  of   Registrable
Securities  as to which any  registration  is being  effected,  and such selling
holder  of  Registrable  Securities  agrees,  to  furnish  to the  Company  such
information  regarding the  distribution of such  Registrable  Securities as the
Company may,  from time to time,  reasonably  request in writing and the Company
may exclude from such registration the Registrable  Securities of any holder who
unreasonably  fails to furnish such  information  within a reasonable time after
receiving such request.  Each holder of  Registrable  Securities as to which any
Registration  Statement  is being  effected  agrees  promptly  to furnish to the
Company  all  information  required  to  be  disclosed  in  order  to  make  the
information  previously

                                      -7-



furnished  to the  Company  by  such  holder  not  misleading.  Any  sale of any
Registrable  Securities  by any holder  shall  constitute a  representation  and
warranty  by such holder  that the  information  relating to such holder and its
plan of distribution is as set forth in the Prospectus  delivered by such holder
in connection  with such  disposition,  that such  Prospectus does not as of the
time of such sale contain any untrue  statement of a material  fact  relating to
such holder or its plan of distribution  and that such Prospectus does not as of
the time of such sale omit to state any material fact relating to such holder or
its plan of distribution necessary to make the statements in such Prospectus, in
the light of the circumstances under which they were made, not misleading.

            Each holder of Registrable  Securities agrees by acquisition of such
Registrable  Securities that, upon receipt of any notice from the Company of the
happening of any event of the kind  described in Section  4(c)(ii)-(vi)  hereof,
such  holder  will  forthwith   discontinue   disposition  of  such  Registrable
Securities covered by the applicable  Registration Statement or Prospectus until
such holder's  receipt of the copies of the  supplemented or amended  Prospectus
contemplated  by Section 4(j)  hereof,  or until it is advised in writing by the
Company  that  the use of the  applicable  Prospectus  may be  resumed,  and has
received copies of any additional or supplemental  filings that are incorporated
or deemed to be incorporated by reference in such Prospectus.

5. Registration  Expenses.  All fees and expenses incident to the performance of
or compliance with this Agreement by the Company (the  "Registration  Expenses")
shall be borne by the Company whether or not any of the Registration  Statements
become  effective  and  whether  or not any of the  Registrable  Securities  are
transferred pursuant to the Registration Statement. Such fees and expenses shall
include,  without  limitation,  (a) all registration and filing fees (including,
without  limitation,  fees and expenses (i) with respect to  designation  of the
Registrable  Securities  as eligible for trading,  and (ii) of  compliance  with
securities  or  Blue  Sky  laws,  (b)  printing  expenses  (including,   without
limitation,  expenses of printing  certificates for Registrable  Securities in a
form  eligible for deposit  with The  Depository  Trust  Company and of printing
Prospectuses),  (c)  messenger,  telephone and delivery  expenses,  (d) fees and
disbursements of counsel for the Company and the Special Counsel, (e) reasonable
fees and disbursements of all independent  certified public accountants retained
by the Company, (f) Securities Act liability insurance if the Company so desires
such insurance,  and (g) fees and expenses of all other Persons  retained by the
Company.  In addition,  the Company  will,  in any event,  bear its own internal
expenses  (including,  without  limitation,  all  salaries  and  expenses of its
officers and employees  performing legal or accounting  duties),  the expense of
any annual audit, the fees and expenses  incurred in connection with the listing
of the  Registrable  Securities  on any  securities  exchange  on which  similar
securities  issued by the Company  are then listed and the fees and  expenses of
any Person, including special experts, retained by the Company.

6. Superior Registration Rights. From and after the date of this Agreement,  the
Company  shall  not,  without  the prior  written  consent  of the  holders of a
majority  of  the  Registrable  Securities  then  outstanding,  enter  into  any
agreement with any holder or  prospective  holder to (i) grant rights pari passu
or  superior  to those  granted  to the  Purchaser  in  Sections 2 and 3 of this
Agreement or (ii) include such  securities in any  registration  statement filed
under Section 2 or Section 3 hereof,  unless under the terms of such  agreement,
such  holder or  prospective  holder may  include  such  securities  in any such
registration  only to the extent that the inclusion of his  securities  will not
reduce  the  amount  of  the  Registrable  Securities  of the  Purchaser  or its
permitted transferees which is included.

                                      -8-



7.          Indemnification.

            (a)  Indemnification  by the  Company.  The Company  shall,  without
limitation  as to time,  indemnify  and hold  harmless,  to the  fullest  extent
permitted by law, each holder of Registrable Securities, the officers, directors
and agents and employees of each of them,  each Person who controls  (within the
meaning of Section 15 of the  Securities  Act or Section 20 of the Exchange Act)
such  holder  and the  officers,  directors,  agents and  employees  of any such
controlling person, from and against all losses, claims,  damages,  liabilities,
costs (including,  without  limitation,  the costs of preparation and reasonable
attorneys' fees) and expenses (collectively, "Losses"), as incurred, arising out
of or based upon any untrue or allegedly  untrue  statement  of a material  fact
contained in any Registration Statement,  Prospectus or form of Prospectus or in
any amendment or supplement thereto or in any preliminary prospectus, or arising
out of or based  upon any  omission  or  alleged  omission  of a  material  fact
required to be stated  therein or necessary to make the  statements  therein not
misleading,  except  insofar  as the  same are  based  solely  upon  information
furnished  in writing to the Company by such holder  expressly  for use therein.
The Company shall also indemnify each selling broker, dealer manager and similar
securities industry professional participating in the distribution,  and each of
their  officers,  directors,  agents and  employees and each Person who controls
such Persons  (within the meaning of Section 15 of the Securities Act or Section
20 of the Exchange Act) to the same extent as provided above with respect to the
indemnification of the holders of Registrable Securities.

            (b)  Indemnification  by  Holder  of  Registrable   Securities.   In
connection  with any  Registration  Statement  in which a holder of  Registrable
Securities is  participating,  such holder  agrees to indemnify,  to the fullest
extent  permitted by law,  the  Company,  its  officers,  directors,  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 officers,
directors, agents or employees of such controlling persons, from and against all
Losses arising out of or based upon any untrue or allegedly  untrue statement of
a material fact contained in any Registration  Statement,  Prospectus or form of
Prospectus  or in any  amendment  or  supplement  thereto or in any  preliminary
prospectus,  or arising out of or based upon any omission or alleged 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 alleged  untrue  statement)  or omission (or alleged
omission)  is made in such  document in  reliance  upon and in  conformity  with
written information furnished to the Company by such holder specifically for use
therein  and  such  information  was  solely  relied  upon  by  the  Company  in
preparation   of  such   Registration   Statement,   Prospectus  or  preliminary
prospectus,  and such information,  if it contains an untrue statement or has an
omission, was not timely corrected, updated or supplemented in a writing by such
holder  to the  Company  expressly  for use in such  Registration  Statement  or
Prospectus. In no event shall the liability of any selling holder of Registrable
Securities  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 Person shall be
entitled to indemnity hereunder (an "indemnified party"), such indemnified party
shall give prompt  notice to the party from which such  indemnity is sought (the
"indemnifying party") of any claim or of the commencement of any proceeding with
respect to which such indemnified  party seeks

                                      -9-




indemnification  or contribution  pursuant hereto;  and the indemnifying  party,
upon  request of the  indemnified  party,  shall  assume the  defense and retain
counsel  reasonably  satisfactory  to the  indemnified  party to  represent  the
indemnified  party and any others the  indemnifying  party may designate in such
proceeding and shall pay the reasonable fees and  disbursements  of such counsel
related to such  proceeding.  The  failure to so notify the  indemnifying  party
shall not relieve the  indemnifying  party of any obligation or liability except
and only to the extent that such  failure was  prejudicial  to the  indemnifying
party and the  indemnifying  party was actually  damaged or suffered any loss or
incurred any additional expense as a result thereof. In any such proceeding, any
indemnified  party shall have the right to retain its own counsel,  but the fees
and expenses of such counsel shall be at the expense of such  indemnified  party
unless (i) the indemnifying  party and the indemnified party shall have mutually
agreed to the  retention of such  counsel or (ii) the named  parties to any such
proceeding (including any impleaded parties) include both the indemnifying party
and the indemnified party and representation of both parties by the same counsel
would be inappropriate  due to actual or potential  differing  interests between
them. It is understood that the indemnifying  party shall not, in respect of the
legal  expenses of any  indemnified  party in connection  with any proceeding or
related  proceedings  in the same  jurisdiction,  be liable for (A) the fees and
expenses of more than one separate firm (in additional to any local counsel) for
all holders and all persons,  if any, who control any holder  within the meaning
of either  Section 15 of the  Securities  Act or Section 20 of the Exchange Act,
and (B) the fees and expenses of more than one separate firm (in addition to any
local  counsel)  for  the  Company,  its  directors,  its  officers  who  sign a
Registration  Statement and each person, if any, who controls the Company within
the meaning of either such section, and that all such fees and expenses shall be
reimbursed as they are  incurred.  In the case of any such separate firm for the
Company, and such directors,  officers and control persons of the Company,  such
firm shall be designated in writing by the Company. The indemnifying party shall
not be liable for any settlement of any proceeding  effected without its written
consent,  but if settled with such  consent or if there be a final  judgment for
the plaintiff,  the indemnifying party agrees to indemnify the indemnified party
from and against any loss or liability by reason of such settlement or judgment.
Notwithstanding  the foregoing  sentence,  if at any time an  indemnified  party
shall have requested an indemnifying  party to reimburse the  indemnified  party
for fees and  expenses  of  counsel  as  contemplated  by the  second  and third
sentences  of this  paragraph,  the  indemnifying  party agrees that it shall be
liable for any settlement of any proceeding effected without its written consent
if (i) such  settlement  is entered into more than 30 days after receipt by such
indemnifying  party of the aforesaid  request and (ii) such  indemnifying  party
shall not have reimbursed the indemnified  party in accordance with such request
prior to the date of such settlement.  The indemnifying  party shall not consent
to entry of any  judgment  or enter into any  settlement  or  otherwise  seek to
terminate any proceeding in which any  indemnified  party is or could be a party
and as to  which  indemnification  or  contribution  could  be  sought  by  such
indemnified  party under this  Section 7, unless such  judgment,  settlement  or
other  termination  includes as an unconditional  term thereof the giving by the
claimant  or  plaintiff  to such  indemnified  party of a  release,  in form and
substance  satisfactory to the indemnified  party, from all liability in respect
of such claim or litigation for which such  indemnified  party would be entitled
to indemnification hereunder.

            (d)  Contribution.  If the  indemnification  provided  for  in  this
Section 7 is  unavailable  to an  indemnified  party under  Section 7(a) or 7(b)
hereof in  respect  of any Losses or is  insufficient  to hold such  indemnified
party harmless, then each applicable indemnifying party, in lieu of indemnifying
such indemnified party, shall,  jointly and severally,  contribute to the amount
paid or

                                      -10-



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 or
indemnifying  parties, on the one hand, and such indemnified party, on the other
hand, 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 or indemnifying  parties,  on the one hand, and
such indemnified  party, on the other hand, shall be determined by reference to,
among other  things,  whether any action in  question,  including  any untrue or
alleged untrue statement of a material fact or omission or alleged omission of a
material fact, has been taken or made by, or relates to information  supplied in
writing 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 a
party as a result of any Losses  shall be deemed to  include  any legal or other
fees or expenses incurred by such party in connection with any proceeding.

            The parties  hereto agree that it would not be just and equitable if
contribution  pursuant  to  this  Section  7(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 provision of this Section 7(d), an indemnifying  party that
is a  selling  holder  of  Registrable  Securities  shall  not  be  required  to
contribute  any  amount in excess of the  amount by which the total net price at
which the Registrable Securities sold by such indemnifying party and distributed
to the public  exceeds the amount of any damages which such  indemnifying  party
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, contribution and expense reimbursement obligations of
the Company  hereunder  shall be in addition  to any  liability  the Company may
otherwise have hereunder,  under the Purchase  Agreement,  the Securities Act or
otherwise. The provisions of this Section 7 shall survive so long as Registrable
Securities remain  outstanding,  notwithstanding any transfer of the Registrable
Securities by any holder or any termination of this Agreement.

8.          Information Requirements.

            (a) The Company shall file in a timely  manner the reports  required
to be filed by it under the  Securities  Act and the Exchange Act, and if at any
time the Company is not required to file such reports, it will, upon the request
of  any  holder  of  Registrable  Securities,   make  publicly  available  other
information  so long as necessary to permit sales pursuant to Rule 144 under the
Securities  Act. The Company  further  covenants that it will cooperate with any
holder of  Registrable  Securities and take such further action as any holder of
Registrable  Securities may reasonably  request  (including  without  limitation
making such representations as any such holder may reasonably  request),  all to
the extent required from time to time to enable such holder to sell  Registrable
Securities  without  registration under the Securities Act within the limitation
of the  exemptions  provided  by Rule 144 under  the  Securities  Act.  Upon the
request of any holder of  Registrable  Securities,  the Company shall deliver to
such holder a written  statement as to whether it has complied  with such filing
requirements.  Notwithstanding the foregoing, nothing in this Section 8 shall be
deemed to  require  the  Company to  register  any of its  securities  under any
section of the Exchange Act.

                                      -11-



            (b) The Company shall file in a timely  manner the reports  required
to be filed  by it under  the  Exchange  Act and  shall  comply  with all  other
requirements  set  forth in the  instructions  to Form S-1 in order to allow the
Company to be eligible to file registration statements on Form S-1.

9.          Miscellaneous.

            (a) No Inconsistent  Agreements.  The Company has not entered, as of
the date hereof,  and shall not enter,  on or after the date of this  Agreement,
any agreement  with respect to its  securities  which is  inconsistent  with the
rights granted to the holders of Registrable Securities in this Agreement.

            (b)  Amendments  and  Waivers.  The  provisions  of this  Agreement,
including  the  provisions  of this  sentence,  may not be amended,  modified or
supplemented,  and waivers or consents to departures from the provisions  hereof
may not be given,  unless the Company has  obtained  the written  consent of the
holders  of  not  less  than a  majority  of the  then  outstanding  Registrable
Securities.  Notwithstanding  the foregoing,  a waiver or consent to depart from
the provisions  hereof with respect to a matter that relates  exclusively to the
rights of holders of  Registrable  Securities  whose  securities  are being sold
pursuant to a  Registration  Statement  and that does not directly or indirectly
affect the rights of other  holders of  Registrable  Securities  may be given by
holders of not less than a majority of the Registrable  Securities being sold by
such holders; provided, that the provisions of this sentence may not be amended,
modified,  or  supplemented  except in  accordance  with the  provisions  of the
immediately preceding sentence.

            (c) Notices.  All notices and other  communications  provided for or
permitted  hereunder  shall be made in writing and shall be deemed  given (a) in
the case of personal delivery, on the date of such delivery,  (b) in the case of
delivery by air courier,  on the business day  following the day of dispatch and
(c) in the case of mailing, on the third business day following such mailing.

                      (x) if to a holder of Registrable Securities,  at the most
current  address  given by such  holder to the  Company in  accordance  with the
provisions of this Section 9(c); and

                      (y)  if to  the  Company,  to  Infocast  Corporation,  One
Richmond Street West, Suite 902, Toronto, Ontario, M5H 3W4, Attention: President
and Chief Executive Officer.

or to such other address as any party may have furnished to the other parties in
writing in accordance herewith.

            (d) Owner of Registrable  Securities.  The Company will maintain, or
will cause its registrar and transfer agent to maintain, a register with respect
to the Registrable  Securities in which all transfers of Registrable  Securities
of which the Company has received notice will be recorded.  The Company may deem
and treat the person in whose name Registrable Securities are registered in such
register  of the  Company  as the owner  thereof  for all  purposes,  including,
without limitation, the giving of notices under this Agreement.

            (e)  Successors  and  Assigns.  This  Agreement  shall  inure to the
benefit of and be binding upon the successors and assigns of each of the parties
and shall inure to the benefit of each holder of

                                      -12-



any Registrable Securities. The Company may not assign its rights or obligations
hereunder  without the prior written  consent of each holder of any  Registrable
Securities.

            (f)  Counterparts.  This  Agreement may be executed in any number of
counterparts and by the parties hereto in separate  counterparts,  each of which
when so  executed  shall be  deemed  to be an  original  and all of which  taken
together shall constitute one and the same instrument.

            (g) Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED
IN ACCORDANCE WITH THE LAWS OF THE STATE OF CALIFORNIA,  AS APPLIED TO CONTRACTS
MADE AND PERFORMED WITHIN THE STATE OF CALIFORNIA,  WITHOUT REGARD TO PRINCIPLES
OF CONFLICT OF LAWS.

            (h)  Severability.   Whenever  possible,   each  provision  of  this
Agreement shall be interpreted in such manner as to be effective and valid under
applicable  law, but if any provision of this Agreement is held to be prohibited
by or invalid under  applicable law, such provision will be ineffective  only to
the extent of such prohibition or invalidity, without invalidating the remainder
of this Agreement.

            (i)  Entire  Agreement.  This  Agreement  and  the  other  documents
delivered  pursuant  hereto  constitute  the full and entire  understanding  and
agreement  between the parties  with  regard to the  subject  matter  hereof and
thereof and supersede and cancel all prior representations,  alleged warranties,
statements,  negotiations,  undertakings, letters, acceptances,  understandings,
contracts  and  communications,  whether  verbal or  written,  among the parties
hereto and thereto or their  respective  agents with respect to or in connection
with the subject matter hereof.

            (j) Attorneys' Fees. In any action or proceeding  brought to enforce
any  provision  of this  Agreement,  or where any  provision  hereof is  validly
asserted as a defense,  the prevailing party, as determined by the court,  shall
be  entitled  to recover  reasonable  attorneys'  fees in  addition to any other
available remedy.

            (k) Further  Assurances.  Each of the parties  hereto  shall use all
reasonable efforts to take, or cause to be taken, all appropriate  action, do or
cause to be done all things  reasonably  necessary,  proper or  advisable  under
applicable law, and execute and deliver such documents and other papers,  as may
be  required  to  carry  out the  provisions  of this  Agreement  and the  other
documents contemplated hereby and consummate and make effective the transactions
contemplated hereby.

            (l)  Termination.  This Agreement and the obligations of the parties
hereunder shall terminate at the end of the Effectiveness Period, except for any
liabilities or  obligations  under Section 5 or 6 or the proviso of Section 4(k)
above, each of which shall remain in effect in accordance with its terms.


                                      -13-




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


                                          "COMPANY"

                                          INFOCAST CORPORATION


                                           By: /s/ James Leech
                                               ---------------------------------
                                           Name: James Leech
                                           Title: President


                                          "PURCHASER"

                                          SUN MICROSYSTEMS, INC.


                                          By:___________________________________


                                          Name:_________________________________


                                          Title:________________________________