EXHIBIT(a)(1)(vi)


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

GUIDELINES FOR DETERMINING THE PROPER IDENTIFICATION NUMBER TO GIVE THE PAYOR.

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 payor.



FOR THIS TYPE OF ACCOUNT:                                   GIVE THE NAME AND TAXPAYER IDENTIFICATION NUMBER OF:
- ------------------------                                    ----------------------------------------------------
                                                         

1.   An individual's account                                The individual

2.   Two or more individuals (joint account)                The actual owner of the account or, if combined funds,
                                                            the first individual on the account (1)
3.   Custodian account of a minor (Uniform Gift to          The minor (2)
     Minors Act)

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

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

5.   Sole proprietorship account                            The owner (3)

6.   A valid trust, estate, or pension trust                The legal entity (Do not furnish the taxpayer
                                                            identification number of the personal representative or
                                                            trustee unless the legal entity itself is not designated
                                                            in the account title) (4)

7.   Corporate account                                      The corporation

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

9.   Partnership account                                    The partnership

10.  A broker or registered nominee                         The broker or nominee

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


(1)  List first and circle the name of the person whose number you furnish. If
     only one person on a joint account has a Social Security number, that
     person's number must be furnished.

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

(3)  Show the name of the owner. Owner may use either owner's social security
     number or owner's employer identification number.

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






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



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

RESIDENT ALIEN INDIVIDUALS: If you are a resident alien individual and you do
not have, and are not eligible to get, a Social Security number, your taxpayer
identification number is your individual taxpayer identification number ("ITIN")
as issued by the Internal Revenue Service. Enter it on the portion of the
Substitute Form W-9 where the Social Security number would otherwise be entered.
If you do not have an ITIN, see "Obtaining a Number" below.

NAME:

         If you are an individual, generally provide the name shown on your
social security card. However, if you have changed your last name, for instance,
due to marriage, without informing the Social Security Administration of the
name change, please enter your first name and both the last name shown on your
social security card and your new last name.

OBTAINING A NUMBER:

         If you do not have a taxpayer identification 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. Resident alien
individuals who are not eligible to get a Social Security number and need an
ITIN should obtain Form W-7, Application for Individual Taxpayer Identification
Number, from the IRS.

PAYEES AND PAYMENTS EXEMPT FROM BACKUP WITHHOLDING:

         The following is a list of payees exempt from backup withholding and
for which no information reporting is required. For interest and dividends, all
listed payees are exempt except the payee in item (9). For broker transactions,
payees listed in items (1) through (13) and a person registered under the
Investment Advisers Act of 1940 who regularly acts as a broker are exempt.
Payments subject to reporting under sections 6041 and 6041A are generally exempt
from backup withholding only if made to payees described in items (1) through
(7). Unless otherwise indicated, all "section" references are to sections of the
Internal Revenue Code of 1986, as amended (the "Code").

         (1)      A corporation.

         (2)      An organization exempt from tax under section 501(a), or an
                  IRA, or a custodial account under section 403(b)(7) if the
                  account satisfies the requirements of section 401(f)(2)

         (3)      The United States or any of its agencies or instrumentalities.

         (4)      A state, the District of Columbia, a possession of the United
                  States, or any of their political subdivisions or
                  instrumentalities.

         (5)      A foreign government or any of its political subdivisions,
                  agencies or instrumentalities.

         (6)      An international organization or any of its agencies or
                  instrumentalities.

         (7)      A foreign central bank of issue.

         (8)      A dealer in securities or commodities required to register in
                  the United States, the District of Columbia, or a possession
                  of the United States.

         (9)      A futures commission merchant registered with the Commodity
                  Futures Trading Commission.

         (10)     A real estate investment trust.




            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                    NUMBER ON SUBSTITUTE FORM W-9 - PAGE 3


         (11)     An entity registered at all times during the tax year under
                  the Investment Company Act of 1940.

         (12)     A common trust fund operated by a bank under section 584(a).

         (13)     A financial institution.

         (14)     A middleman known in the investment community as a nominee or
                  custodian.

         (15)     A trust exempt from tax under section 664 or described in
                  section 4947.

                  PAYMENTS OF DIVIDENDS AND PATRONAGE DIVIDENDS NOT GENERALLY
SUBJECT TO BACKUP WITHHOLDING INCLUDE THE FOLLOWING:

         -        Payments to nonresident aliens subject to withholding under
                  section 1441.

         -        Payments to partnerships not engaged in a trade or business in
                  the U.S. and which have at least one nonresident partner.

         -        Payments of patronage dividends where the amount received is
                  not paid in money.

         -        Payments made by certain foreign organizations. Section 404(k)
                  distributions made by an ESOP.

                  PAYMENTS OF INTEREST NOT GENERALLY SUBJECT TO BACKUP
WITHHOLDING INCLUDE THE FOLLOWING:

         -        Payments of interest on obligations issued by individuals.
                  Note: You may be subject to backup withholding if this
                  interest is $600 or more and is paid in the course of your
                  trade or business and you have not provided your correct
                  taxpayer identification number to the payor.

         -        Payments of tax-exempt interest (including exempt-interest
                  dividends under section 852).

         -        Payments described in section 6049(b)(5) to non-resident
                  aliens.

         -        Payments on tax-free covenant bonds under section 1451.

         -        Payments made by certain foreign organizations.

         -        Payments of mortgage or student loan interest to you.

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

                  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, 6042, 6044, 6045,
6049, 6050A and 6050N of the Code and the Treasury regulations promulgated
thereunder.

PRIVACY ACT NOTICE -- Section 6109 requires most recipients of dividend,
interest, or other payments to give their correct taxpayer identification
numbers to payors who must report the payments to the IRS. The IRS uses the
numbers for identification purposes and to verify the accuracy of tax returns.
The IRS also may 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. Payors must be given the numbers whether or not
recipients are required to file tax returns. Payors must generally withhold tax
from payments of taxable interest, dividend, and certain other



            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                     NUMBER ON SUBSTITUTE FORM W-9 - PAGE 4

payments to a payee who does not furnish a taxpayer identification number to a
payor. The current rate of such withholding tax is 30%. Certain penalties may
also apply.

PENALTIES

(1)      PENALTY FOR FAILURE TO FURNISH TAXPAYER IDENTIFICATION NUMBER -- If you
fail to furnish your correct taxpayer identification number to a payor, 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.