S.W. LAM, INC.

               CERTIFICATE OF DESIGNATION, PREFERENCES AND RIGHTS
                OF A SERIES OF 100,000 SHARES OF PREFERRED STOCK,
                           $.001 PAR VALUE, DESIGNATED
                           "SERIES A PREFERRED STOCK"


     S.W. Lam, Inc., a Nevada  Corporation (the  "Corporation"),  by way of this
Certificate  of  Designation,  Preferences  and Rights (as it may  hereafter  be
amended,  modified or  supplemented  upon vote of the Board of  Directors of the
Corporation  and  approval of all holders of Series A Preferred  Stock,  as such
term is hereinafter defined,  this  ("Certificate")  certifies that, pursuant to
the authority  expressly  vested in the Board of Directors by the  Corporation's
Articles of  Incorporation,  and in  accordance  with the  provisions of Section
78.195 of the Nevada Revised Statutes, the Board of Directors of the Corporation
has duly adopted the  following  resolutions  creating a series of its Preferred
Stock designated as Series A Preferred Stock:

     RESOLVED, that pursuant to the authority expressly granted to and vested in
     the Board of Directors of the Corporation by the provisions of the Articles
     of Incorporation of the  Corporation,  as amended,  this Board of Directors
     hereby creates a series of Preferred Stock, $.001 par value, and this Board
     of Directors hereby fixes the designation and the voting power, preferences
     and rights, and the qualifications, limitations or restrictions thereof, of
     the shares of such  series (in  addition  to the  powers,  preferences  and
     rights, and the qualifications,  limitations or restrictions  thereon,  set
     forth in the Articles of Incorporation, as amended, which are applicable to
     all series of Preferred Stock of the Corporation) as follows:

     One hundred  thousand  (100,000) shares of Preferred Stock, par value $.001
     per  share,  of the  Corporation  are  hereby  constituted  as a series  of
     Preferred  Stock  designated  as Series A  Preferred  Stock (the  "Series A
     Preferred  Stock") with the voting  powers and the  preferences  and rights
     hereinafter set forth:

     SECTION 1.  DIVIDENDS.  The holders of shares of Series A  Preferred  Stock
(the  "Preferred  Shares") shall be entitled to receive out of the assets of the
Corporation  legally  available for dividends such  dividends in cash,  stock or
property as the board of directors  shall, in its discretion,  declare from time
to time.

     SECTION  2.  LIQUIDATION  PREFERENCE.  In the  event  of  any  liquidation,
dissolution or winding up of the affairs of the Corporation,  whether  voluntary
or involuntary, the holders of the Preferred Shares shall be entitled to be paid
first out of the assets of the Corporation available for distribution to holders
of the  Corporation's  capital stock of all classes an amount equal to $.001 per
share of Series A Preferred Stock, and no more, before any distribution shall be
made to the holders of the Common  Stock or any other class of capital  stock or
series thereof ranking junior to the Preferred Shares with respect to the


                                      -1-

distribution of assets.  If the assets of the Corporation  shall be insufficient
to permit the  payment in full to the  holders  of the  Preferred  Shares of the
amounts thus distributable,  then the entire assets of the Corporation available
for such  distribution  shall be  distributed  ratably  among the holders of the
Preferred Shares in proportion to the full preferential  amount each such holder
is otherwise entitled to receive.

     SECTION 3.  VOTING  RIGHTS.  The  holders of the Series A  Preferred  Stock
shall,  as a class,  be  entitled  to such  number of votes as shall  constitute
thirty  percent (30%) of the total eligible votes in all matters voted on by the
shareholders  of the  Corporation  an shall be further  entitled  to such voting
rights as may be expressly required by law. Without the approval of holders of a
majority of the outstanding  Preferred  Shares,  the  Corporation  shall not (a)
authorize,  create or issue any shares of any class or series  ranking senior to
the Preferred Shares as to liquidation  rights,  (b) amend,  alter or repeal, by
any means,  the  Certificate of  Incorporation  if the powers,  preferences,  or
special  rights of the  Preferred  Shares  would be adversely  affected,  or (c)
become  subject  to  any  restriction  on  the  Preferred  Shares,   other  than
restrictions  arising solely under the General  Corporation  Law of the State of
Nevada  or  existing  under the  Certificate  of  Incorporation  as in effect on
October 10, 1996.

     SECTION 4. RIGHTS OTHERWISE IDENTICAL. In all other respects, each share of
the Series A Preferred  Stock and the share of any other series,  if any,  shall
have identical rights and privileges in every respect.

     IN WITNESS  WHEREOF,  S.W. Lam, Inc. has caused this Certificate to be duly
executed and attested effective as of the day of October, 1996.


                                      S.W.  LAM, INC.


                                      /s/ Hank Vanderkam
                                      --------------------------
                                      By:  Hank Vanderkam
                                      Name:  Hank Vanderkam
                                      Title:  President

ATTEST:


/s/ Michele Hanlon
- -----------------------
Michele Hanlon
Secretary


                                      -2-

STATE OF TEXAS     }
                   }
COUNTY OF HARRIS   }

     I, ANDREA BENSON, a Notary Public,  do hereby certify that on this 10TH day
of October, 1996, personally appeared before me HANK VANDERKAM, who, being by me
first duly sworn  declared that he is the PRESIDENT of S.W. LAM,  INC.,  that he
signed the  foregoing  document as  PRESIDENT of the  corporation,  and that the
statements therein contained are true and correct.


                                  /s/ illegible
                                  -----------------------------
                                  Andrea Benson
                                  Notary Public in and for the
                                  State of Texas
                                  Andrea V. Benson
                                  -----------------------------
                                  Printed Name of Notary Public
                                  My Commission Expires: 9/12/99


                                      -3-