Exhibit 10.35.3

STANDSTILL AGREEMENT

           THIS   AGREEMENT   effective  as  provided   herein  by  and  between
ENVIRONMENTAL  REMEDIATION HOLDING CORPORATION ("ERHC"), a Colorado corporation,
with  offices  at 1686  General  Mouton  Avenue,  Lafayette,  LA  70508  and the
Investors  or their  permitted  assigns  whose names are  included in Schedule A
annexed  hereto  and  made  a  part  hereof  (collectively  the  "Investors"  or
individually, the "Investor").

           WHEREAS,  on June 1, 1998 ERHC  granted  warrants to purchase  ERHC's
common stock with an exercise  date on or before  fourteen  (14) months from the
effective date of a Registration Statement covering the warrants, which warrants
also  contained  rights for the  holders to be granted  additional  warrants  in
certain circumstances (the "Warrants"); and

           WHEREAS, ERHC has executed and its Board of Directors have approved a
letter of intent  dated April 8, 1999 with ERHC  Investment  Group,  Inc.  which
requires certain consents from the Investors and amendments and modifications to
the Warrants, a copy of which letter of intent is annexed hereto and made a part
hereof as Exhibit A (the "Letter of Intent"); and

           WHEREAS,  the parties wish to confirm in writing their  understanding
and agreement regarding these matter.

           NOW  THEREFORE  in  consideration  of the mutual  promises  contained
herein and for other good and valuable  consideration,  the receipt and adequacy
of which are hereby acknowledged, the parties agree as follows:

     1.   Confidential  Information.   Investors'  consent  and  amendments  and
          modifications  to the Warrants as provided in the Letter of Intent are
          conditions  precedent to the Initial Closing.  This is due to the fact
          that the  Warrants  have  certain  adjustments  which  may  render  it
          impossible for ERHC to issue the requisite  control interest  required
          under the term of the Letter of Intent.  The matters  contained herein
          and in the Letter of Intent are confidential information not available
          to the public. These matters will only be made public with a filing by
          ERHC of a Form 8K within the time required from the Initial Closing as
          defined in the Letter of Intent (the "Initial  Closing"),  the date on
          which an 8K event takes place.  Accordingly,  the Investors  expressly
          agree  not to  disclose,  use or  trade  on  this  information  either
          directly or  indirectly  in any manner  until such time as the Form 8K
          reporting this Letter of Intent is filed with the SEC.

     2.   Amendments  and  Modifications.  From the date of the Initial  Closing
          under the Letter of Intent,  it is agreed that the following terms and
          conditions are amended and modified:

          A.   The Warrants are amended and modified as follows:







               1.   The  antidilution  provisions in Article III,  paragraph 3.2
                    and 3.4 of the  Warrants  are deleted in their  entirety and
                    the text set forth in Exhibit B substituted in their place.

               2.   Article III, paragraph 3.3 is deleted in its entirety.

          B.   In addition to the foregoing  amendments and  modifications,  the
               Investors consent and agree to the following additional terms:

               1.   From the date of execution of this  Agreement,  to waive all
                    rights under any  adjustments,  antidilution  provisions  or
                    preemptive  rights  previously  granted in the  Warrants  or
                    provided by these  amendments and  modification (i) relative
                    to the  transaction  contemplated in the Letter of Intent or
                    (ii)  relative  to any  settlement  with  Procura  Financial
                    entered  into by the Company  upon  commercially  reasonable
                    terms to complete the  assignment  of all rights,  title and
                    interest in Sao Tome in favor of the Company.

               2.   From the date of execution of this  Agreement and thereafter
                    until  October  15,  1999,  to vote with the  Company in the
                    event  that any third  party,  other  than each of the other
                    note and warrant holders listed as a Selling  Shareholder in
                    Amendment  No.  3 to the  Form  S- 1  filed  with  the  SEC,
                    commences any bankruptcy or  foreclosure  action against the
                    Company or any of its subsidiaries.

3.   Effects  of No Closing  under the  Letter of  Intent.  In the event that no
     Closing as defined in the Letter of Intent (the  "Closing")  occurs  within
     ninety  (90) days from the date of the  Initial  Closing,  the  amendments,
     modifications  and  consents in paragraph 2 above shall be null and void ab
     initio.

4.   ERHC Representations and Warranties.  ERHC represents and warrants that the
     amendments,  modifications  and  consents  set  forth  in  paragraph  2 are
     substantially similar to the amendments,  modifications and consents sought
     from each of the  other  convertible  note and  warrant  holders  listed as
     Selling  Shareholders in the Amendment No. 3 to the Form S-1 filed with the
     SEC and differ only in those matters  which are specific to any  particular
     note or warrant transaction listed therein.

5.   Effect upon Other Terms and Conditions.  Notwithstanding the amendments and
     modifications  contained  herein,  it is  expressly  agreed by the  parties
     hereto that all other  terms,  conditions  and  provisions  of the Warrants
     remain in full force and effect.

6.   Ratification.  The Investors ratify the acts of and hold harmless the Board
     of Directors and Officers for all actions taken by them in compliance  with
     the  interpretations  of any  court  of  competent  jurisdiction  as to the
     application  of the  Business  Judgement  Rule from  inception  through the
     Initial Closing Date.








7.   Intended  Beneficiaries.  ERHC  and  ERHC  Investment  Group  Inc.  are the
     intended  beneficiaries of this Agreement.  In the event of any breach, the
     parties and the intended  beneficiaries  of this  Agreement  shall have all
     remedies  available  at  law or in  equity  including  the  right  to  seek
     injunctive relief.

8.   Effective Date. This Agreement shall be effective and binding upon ERHC and
     the each  Investor  set forth in Schedule A  individually  from the date of
     execution by each Investor.

9.   Binding Obligations.  The obligations of the parties set forth herein shall
     be binding upon and inure to the benefit of each party's heirs,  executors,
     administrators, beneficiaries, transferees, successors and assigns.

10.  Governing Law,  Jurisdiction and Venue. The governing law, jurisdiction and
     venue set forth in the Warrants shall remain in full force and effect.

11.  Counterparts.  This  Agreement may be executed in one or more  counterpart,
     each of which when taken  together shall  represent one binding  agreement.
     Delivery  of an  executed  counterpart  hereof via  telecopier  shall be as
     effective as delivery of a manually executed counterpart hereof.

     IN  WITNESS  WHEREOF,  each  party set  their  hand and seal  effective  as
provided herein.

                                            ENVIRONMENTAL REMEDIATION
                                                  HOLDING CORPORATION
                                            By: /s/ JAMES A.  GRIFFIN
                                            -------------------------
                                          James A. Griffin, Secretary

                                    INVESTOR:

Execution Date: April 23, 1999               Corporate Builders
                                            By: /s/ EARNEST D.  CHU
                                             -----------------------
                                            Signature and Title
                                            Print Name: Earnest D.  Chu
                                            Print Title: President

Execution Date:     1999                     /s/ HOWARD TALKS
                                             -----------------
                                             Signature and Title
                                             Print Name: Howard Talks


Execution Date:     1999                     Legal Computer Technology, Inc.
                                             By: /s/ DONALD F.  MINTMIRE
                                             ---------------------------
                                             Signature and Title
                                             Print Name: Donald F.  Mintmire
                                             Print Title: President
[Signature Page First June 1998 Financing]







                                   SCHEDULE A






CORPORATE BUILDERS, INC.

LEGAL COMPUTER TECHNOLOGY, INC.

HOWARD TALKS







                                    EXHIBIT B

Antidilution Provision. The Exercise Price in effect from time to time shall be,
subject to adjustment in accordance with the provisions of this Section .

     (a) Adjustments for Stock Splits and Combinations. If the Company
shall at any time or from  time to time  after the date  hereof,  effect a stock
split of the outstanding  Common Stock, the applicable  Exercise Price in effect
immediately prior to the stock split shall be proportionately  decreased. If the
Company  shall at any time or from time to time after the date  hereof,  combine
the outstanding shares of Common Stock, the applicable  Exercise Price in effect
immediately prior to the combination  shall be  proportionately  increased.  Any
adjustments  under this  Section (a) shall be effective at the close of business
on the date the stock split or combination occurs.

     (b) Adjustments  for Certain  Dividends and  Distributions.  If the Company
shall at any time or from  time  after the date  hereof,  make or issue or set a
record date for the determination of holders of Common Stock entitled to receive
a dividend or other distribution payable in shares of Common Stock, then, and in
each event, the applicable  Exercise Price in effect  immediately  prior to such
event shall be decreased as of the time of such issuance or, in the event such a
record  date shall have been  fixed,  as of the close of business on such record
date, by  multiplying,  as  applicable,  the  applicable  Exercise Price then in
effect by a fraction;

          (i) the  numerator  of which  shall be the  total  number of shares of
Common  Stock  issued  and  outstanding  immediately  prior  to the time of such
issuance or the close of business on such record date; and

          (ii) the  denominator  of which shall be the total number of shares of
Common  Stock  issued  and  outstanding  immediately  prior  to the time of such
issuance  or the close of business on such record date plus the number of shares
of Common Stock issuable in payment of such dividend or distribution.

     (c) Adjustment for Other Dividends and Distributions.  If the Company shall
at any time or from time to time after the date  hereof,  make or issue or set a
record date for the determination of holders of Common Stock entitled to receive
a dividend or other  distribution  payable in other than shares of Common Stock,
then, and in each event, an appropriate  revision to the Exercise Price shall be
made and  provision  shall  be made (by  adjustments  of the  Exercise  Price or
otherwise)  so that the  holder  of this Note  shall  receive  upon  conversions
thereof, in addition to the number of shares of Common Stock receivable thereon,
the number of  securities of the Company which they would have received had this
Note  been  converted  into  Common  Stock  on the  date of such  event  and had
thereafter,  during the period from the date of such event to and  including the
date hereof,  retained such securities (together with any distributions  payable
thereon during such period),  giving  application to all adjustments  called for
during such  period  under this  Section  (c) with  respect to the rights of the
holders of the Warrant.

     (d)  Adjustments for  Reclassification,  Exchange or  Substitution.  If the
Common Stock  issuable upon  conversion of this Warrant at any time or from time
to time after the date hereof shall be changed into the same or different number
of shares of any class or classes of stock, whether by reclassification,






exchange,  substitution  or  otherwise  (other  than by way of a stock  split or
combination of shares or stock  dividends  provided for in Sections (a), (b) and
(c), or a reorganization,  merger, consolidation, or sale of assets provided for
in Section (e), then, and in each event, an appropriate revision to the Exercise
Price shall by made and provisions shall be made (by adjustments of the Exercise
Price of  otherwise)  so that the  holder of this  Warrant  shall have the right
thereafter  to convert  such Warrant into the kind and amount of shares of stock
and other securities receivable upon reclassification, exchange, substitution or
other change, by holders of the number of shares of Common Stock into which such
Warrant might have been converted  immediately  prior to such  reclassification,
exchange,  substitution  or other change,  all subject to further  adjustment as
provided herein.

     (e)  Adjustments  for  Reorganization,  Merger,  Consolidation  or Sales of
Assets. If at any time or from time to time after the date hereof there shall be
a capital  reorganization  of the Company (other than by way of a stock split or
combination  of shares  or stock  dividends  or  distributions  provided  for in
Section (a), (b), and (c), or a  reclassification,  exchange or  substitution of
shares provided for in Section (d), or a merger or  consolidation of the Company
with or into another corporation, or the sale of all or substantially all of the
Company's  properties  or  assets to any  other  person,  then as a part of such
reorganization,  merger, consolidation,  or sale, an appropriate revision to the
Exercise Price shall be made and provision  shall be made (by adjustments of the
Exercise  Price or  otherwise) so that the holder of this Warrant shall have the
right  thereafter  to convert this Warrant into the kind and amount of shares of
stock  and  other  securities  or  property  of the  Company  or  any  successor
corporation resulting from such reorganization,  merger, consolidation, or sale,
to which a holder of Common Stock  deliverable  upon  conversion  of such shares
would have been entitled upon such  reorganization,  merger,  consolidation,  or
sale,  to which a holder of Common Stock  deliverable  upon  conversion  of such
shares would have been entitled upon such reorganization, merger, consolidation,
or  sale.  In any  such  case,  appropriate  adjustment  shall  be  made  in the
application  of the provisions of this Section (e) with respect to the rights of
the holders of this Warrant after the reorganization,  merger, consolidation, or
sale to the  end  that  the  provisions  of  this  Section  (e)  (including  any
adjustment in the applicable  conversion  ratio then in effect and the number of
shares of stock or other securities deliverable upon conversion of this Warrant)
shall be applied  after that event in as nearly an  equivalent  manner as may be
practicable.