Exhibit (a)(6)

             GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                          NUMBER ON SUBSTITUTE FORM W-9

Guidelines  for  Determining  the  Proper  Identification  Number  to  Give  the
Payer.--Social  Security  numbers have nine digits separated by two hyphens i.e.
000-00-0000.  Employer identification numbers have nine digits separated by only
one hyphen i.e.,  00-0000000.  The table below will help determine the number to
give the payer.




____________________________________________________________________________________________________________________________________

                                                                      Give the
                                                                      SOCIAL SECURITY
For this type of account:                                             number of--
____________________________________________________________________________________________________________________________________

                                                                

  1.   An individual's account                                        The individual

                                                                      The actual owner of the account or, if combined funds, the
  2.   Two or more individuals (joint account)                        first individual on the account(1)

                                                                      The actual owner of the account or, if joint funds, either
  3.   Husband and wife (joint account)                               person(1)


  4.   Custodian account of a minor (Uniform Gift to Minors           The minor (2)
       Act)

                                                                      The adult, or if the minor is the only contributor, the
  5.   Adult and minor (joint account)                                minor(1)


  6.   Account in the name of guardian or committee for a             The ward, minor, or incompetent person (3)
       designated ward, minor, or incompetent person


  7.  a.    The usual revocable savings trust account (grantor        The grantor-trustee (1)
            is also trustee)


       b.   So-called trust account that is not a legal or            The actual owner (1)
            valid trust under State law


  8.   Sole proprietorship or single-owner LLC                        The owner (4)

                                                                      The legal entity (Do not furnish the identifying number of
  9.   A valid trust, estate, or pension trust                        the personal representative or trustee unless the legal
                                                                      entity itself is not designated in the account title)(5)


10.   Corporate account or LLC electing corporate status on           The corporation
      Form 8832


11.   Association, club, religious, charitable, educational or        The organization
      other tax-exempt organization


12.   Partnership or multi-member LLC                                 The partnership


13.   Association, club or other tax-exempt organization              The organization


14.   A broker or registered nominee                                  The broker or nominee


15.   Account with the Department of Agriculture in the name of a
      public entity (such as a state or local government, school      The public entity
      district or prison) that receives agricultural program
      payments
____________________________________________________________________________________________________________________________________



(1)  List first and circle the name of the person whose number you furnish.

(2)  Circle the minor's name and furnish the minor's social security number.

(3)  Circle the ward's,  minor's or  incompetent  person's name and furnish such
     person's social security number.

(4)  You must show your individual  name. You may also enter your business name.
     You  may  use  either  your  Social   Security   Number  or  your  Employer
     Identification Number.

(5)  List  first and  circle  the name of the legal  trust,  estate,  or pension
     trust.

Note: If no name is circled when there is more than one name, the number will be
considered to be that of the first name listed.





             GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                          NUMBER ON SUBSTITUTE FORM W-9
                                     Page 2

Obtaining a Number

If you don't  have a  taxpayer  identification  number  or you  don't  know your
number,  obtain Form SS-5,  Application  for a Social  Security Number Card (for
individuals),  or Form SS-4, Application for Employer Identification Number (for
businesses and all other  entities),  at the local office of the Social Security
Administration  or the  Internal  Revenue  Service  (the  "IRS") and apply for a
number.

Payees Exempt from Backup Withholding

Payees specifically exempted from backup withholding on payments under the Offer
include the following:

     o    A corporation.

     o    An  organization  exempt from tax under section 501(a) of the Internal
          Revenue  Code of 1986,  as  amended  (the  "Code"),  or an  individual
          retirement plan.

     o    The United States or any agency or instrumentality thereof.

     o    A State, the District of Columbia,  a possession of the United States,
          or any subdivision or instrumentality thereof.

     o    A foreign government, a political subdivision of a foreign government,
          or any agency or instrumentality thereof.

     o    An  international   organization  or  any  agency  or  instrumentality
          thereof.

     o    A registered  dealer in  securities or  commodities  registered in the
          U.S., or a possession of the U.S.

     o    A real estate investment trust.

     o    A common  trust fund  operated by a bank under  section  584(a) of the
          Code.

     o    An exempt charitable  remainder trust, or a non-exempt trust described
          in section 4947(a)(1) of the Code.

     o    A person  registered at all times under the Investment  Company Act of
          1940 who regularly acts as a broker.

     o    A foreign central bank of issue.

Exempt payees  described above should file Form W-9 to avoid possible  erroneous
backup  withholding.  FILE THIS  FORM  WITH THE  PAYER.  FURNISH  YOUR  TAXPAYER
IDENTIFICATION NUMBER, WRITE "EXEMPT" ON THE FACE OF THE FORM, SIGN AND DATE THE
FORM AND RETURN IT TO THE PAYER.  IF YOU ARE A  NON-RESIDENT  ALIEN OR A FOREIGN
ENTITY NOT SUBJECT TO BACKUP  WITHHOLDING,  FILE WITH PAYER A COMPLETED INTERNAL
REVENUE FORM W-8 (CERTIFICATE OF FOREIGN STATUS).

Certain payments other than interest dividends,  and patronage  dividends,  that
are not  subject  to  information  reporting  are also  not  subject  to  backup
withholding. For details, see Sections 6041, 6041A(a), 6045, and 6050A and 6050N
of the Code and the regulations promulgated therein.

Privacy Act Notice--Section  6109 requires most recipients of payments under the
Offer to give  taxpayer  identification  numbers to us. The IRS uses the numbers
for identification purposes. Recipients of payments under the Offer must give us
the numbers  whether or not the recipients are required to file tax returns.  We
must  generally  withhold  28% of the payments to a payee who does not furnish a
taxpayer identification number to a payer. Certain penalties may also apply. The
IRS uses the numbers for identification purposes and to help verify the accuracy
of your tax return.  The IRS may also provide this information to the Department
of Justice  for civil and  criminal  litigation,  and to cities,  states and the
District of Columbia to carry out their tax laws. The IRS may also disclose this
information  to other  countries  under a tax  treaty,  or to Federal  and state
agencies to enforce nontax criminal laws and to combat terrorism.

Penalties

(1) Penalty for Failure to Furnish Taxpayer  Identification  Number--If you fail
to furnish your taxpayer  identification number to a payer, you are subject to a
penalty of $50 for each such failure  unless your  failure is due to  reasonable
cause and not to willful neglect.

(2) Civil Penalty for False Information with Respect to Withholding--If you make
a false  statement  with no  reasonable  basis which results in no imposition of
backup withholding, you are subject to a penalty of $500.

(3)   Criminal   Penalty  for   Falsifying   Information--Willfully   falsifying
certifications or affirmations may subject you to criminal  penalties  including
fines and/or imprisonment.

FOR ADDITIONAL INFORMATION,  CONTACT YOUR TAX CONSULTANT OR THE INTERNAL REVENUE
SERVICE.