Document:

EXHIBIT 10.18

August 15 2005

                                AMENDMENT TO THE
                    EMPLOYMENT AGREEMENT DATED AUGUST 1, 2003
by and between SIBERIAN ENERGY GROUP INC., a Nevada corporation (the "Company"),
and  ELENA  POCHAPSKI  ("Employee")  made  effective  as  of  September 1, 2005.
Employee and the Company are sometimes referred to individually as a "Party" and
collectively  as  the  "Parties."

WHEREAS  THE EMPLOYEE has been serving as Chief Financial Officer of the Company
for  the  period  from August 1, 2003 to August 30, 2005, during which period no
compensation has been paid to the employee;

AND  WHEREAS THE CORPORATION AND THE EMPLOYEE wish to determine terms of payment
of compensation accrued up to August 30, 2005 and in the future periods,

NOW THEREFORE THIS AGREEMENT WITNESSETH, that the Parties agree as follows:

     1.   Accrued  salary  for  the  period  of  August  1,  2003  to August 30,
          2005 in the total amount of US$134,707 will be treated as follows:

          1.1  Amount  of  US$50,000  will  be  paid  by  the Company by the way
               of  issue  of  400,000 restricted shares of Siberian Energy Group
               Inc.'s  common stock. "Restricted" securities have the meaning as
               that  term  is defined in the rule 144 under the 1933 Act and may
               not be offered for sale, sold or otherwise transferred except for
               pursuant to the provisions of the 1933 Act.

          1.2  The  Employee  agrees   to  postpone  the  payment  of  remaining
               US$84,707  until  such  time as the Company shall have sufficient
               profits  to  pay  the amount in cash either partially or in full.
               Employee  will   provide  the  Company   with  a  waiver  letter,
               confirming that she shall not seek to exercise any rights against
               SEG  in  relation  to  the  unpaid amounts until such time as SEG
               shall have sufficient profits available to discharge the claim.

          1.3  At  any  time  the  parties  may  agree  on  'non-cash" method of
               payment of the outstanding amounts.

     2.   Compensation  for  the  period  starting  September  1,  2005  will be
          paid in the following amounts and on the following dates:

          2.1  Annual  salary  is  fixed  at  $75,000  Canadian  dollars for the
               period  until  April  30,  2006  at  which time the amount may be
               returned  to  the regular amount as per the employment agreement,
               depending on the financial condition of the Company;

          2.2  Monthly  salary  calculated  as  1/12th  of  the  annual  salary
               will be paid on the last day of each month

<PAGE>

          2.3  Monthly  salary  will  be  paid  in  Canadian  dollars  from  the
               bank  account  of  Siberian  Energy  Group  Inc.  (Canada).  Any
               payments,  which  the  Company shall make to Employee pursuant to
               this agreement shall be reduced by standard withholding and other
               payroll  deductions  in accordance with applicable legislation of
               Canada.

     3.   The  Company  acknowledges  that  the  Employee is required to use her
          personal  automobile  to  perform her duties, which include but is not
          limited  to  the  trips to the bank, airport, auditors and consultants
          and  on  various  office  needs.  The  Company  will pay to Employee a
          monthly allowance of $500 to reimburse automobile expenses.

     4.   All  other  provisions  of  the  Employment  agreement dated August 1,
          2003 remain without change.

IN WITNESS WHEREOF, the parties have caused this Agreement to be executed the
day and year first above written.

EMPLOYEE                          SIBERIAN  ENERGY  GROUP  INC.

/s/  Elena  Pochapski             /s/  David  Zaikin
------------------------------    ------------------------------
Elena Pochapski, Individually
Address:  XXXXXXXXXXXXXXXXX       David Zaikin, Chairman and CEO
          XXXXXXXXXXXXX

<PAGE>Agreed terms document under the joint venture shareholders' agreement dated [ ]
October 2005 among  Baltic  Petroleum  (E&P)  Limited,  Siberian  Energy  Group
Inc. and Zauralneftegaz Limited

                                 Waiver Letter

To:

Siberian Energy Group Inc.
275 Madison Avenue
6th Floor
New York
NY 10016
United States

Zauralneftegaz Limited
c/o Gilchrist Solicitors
18b Charles Street
London W1J 5DU
United Kingdom

Date: October [ ], 2005

Dear Sirs

SIBERIAN ENERGY GROUP INC.

I am writing this letter in connection with the proposed joint venture agreement
between Baltic Petroleum  (E&P)  Limited  ("BP"),  Siberian  Energy  Group  Inc.
("SEG") and Zauralneftegaz Limited  ("ZNG LTD") dated 14 October, 2005  relating
to OOO  Zauralneftegaz  ("ZNG").  I  acknowledge  that  delivery  of this waiver
letter is a condition precedent to completion of such  agreement  and  that  the
terms hereof may only be varied or amended with the  consent  of  both  SEG  and
ZNG Ltd.

I hereby confirm that, other than those claims against SEG which  are listed  in
the Schedule hereto (the "CLAIMS") and which has been settled as of October  26,
2005 by acceptance of  SEG's shares, [             ] has no  actual,  contingent
or prospective claim outstanding of any nature against SEG, ZNG or any of  their
respective directors, officers and employees or any of  them  in  respect of any
cause, matter or thing whatever.  However, to the extent  that  any  such  claim
(other  than  the  Claims) exists or may exist, [             ] Inc. irrevocably
waives  such claim and releases SEG,  ZNG  and/or  their  respective  directors,
officers and employees, as the case may be, from any  liability  in  respect  of
such claim.

I hereby confirm that [          ] shall not seek to exercise any rights against
SEG in relation to the Claims until such  time  as  SEG  shall  have  sufficient
profits available to discharge the Claims.

EXECUTED by

/s/ [signature]

                                  The Schedule
        Description of Claim                                  Amount ($)
    ----------------------------                          ----------------

<PAGE>Exhibit 10.15

                              CONSULTING AGREEMENT
                              --------------------

     This  Consulting Agreement (the "Agreement") is entered into as of November
11, 2005, by and between Vijay Alimchandani, dba Financial Systems International
("FSI" or "Consultant") and National Parking Systems, Inc., a Nevada corporation
(the "Client").

     WHEREAS, the Client requires financial and management advice and consulting
in  connection  with its desires to acquire a company in the stem cell business,
and  to  secure  valuable  management  consulting  to  assist  the Client in its
operations,  strategy  and  in  its  negotiations  with  vendors,  customers and
strategic partners (the "Client Objectives");

     WHEREAS,  FSI has a pre-existing relationship with a stem cell company, its
majority  shareholder  and various members of its management, and FSI has agreed
to  assist  the  Client  in negotiating and closing the acquisition of such stem
cell company;

     WHEREAS,  the  Client  recognizes  that  the  Consultant  can contribute to
analyzing,  structuring  and   negotiating  acquisitions   and  other  desirable
projects,  including the Client Objectives, which contribution is of great value
to the Client and its shareholders;

     WHEREAS,  the Client believes it to be important to retain Consultant, on a
non-exclusive  basis, and have Consultant available to the Client for consulting
services  in  the manner and subject to the terms, covenants, and conditions set
forth herein;

     WHEREAS,  in  order  to accomplish the foregoing, the Client and Consultant
desire to enter into this Agreement.

     NOW  THEREFORE,  in  view  of  the  foregoing  and  in consideration of the
premises  and  mutual  representations,   warranties,   covenants  and  promises
contained  herein  and  other  good  and valuable consideration, the receipt and
sufficiency  of  which are hereby acknowledged, the parties hereto, intending to
be legally bound hereby, agree as follows:

1.   Retention.  The  Client  hereby  retains  the  Consultant for a term ending
     ---------
     on June 30, 2006.

2.   Duties  of  Consultant.  During  the  Consulting  Period,  the  Consultant
     ----------------------
     shall  use  its  reasonable  and  best efforts to perform those actions and
     responsibilities  necessary  to  assist  the  Client  with in achieving the
     Client Objectives, as instructed by the Client from time to time, including
     assisting  the  Client in the negotiation, documentation and closing of the
     acquisition of a stem cell company, in each case as requested by the Client
     (the  "Services").  Consultant shall render such Services diligently and to
     the best of its ability.

3.   Compensation.   In   consideration   for  Consultant   entering  into  this
     ------------
     Agreement  and the Services provided hereunder, the Client shall compensate
     Consultant  by  paying  to  Consultant  either  (a)  Fifty Thousand Dollars
     ($50,000)  in  cash,  or  (b)  (i)  1,500,000 shares of the common stock of
     Client,  and  (ii)  a warrant to purchase 500,000 shares of common stock of
     Client  at  an  exercise  price  of  $1.00  per  share. Notwithstanding the
     foregoing,  in  the event the Client does not complete the acquisition of a
     stem  cell  company prior to June 30, 2006, then, in such event and only in

<PAGE>

     such  event,  the  Client  shall  have the right to purchase the Shares and
     Warrants  for  $1,000, or, if the Client has paid Consultant in the form of
     $50,000  cash,  the Consultant shall refund $49,000 of such payment. Client
     shall issue the shares and warrants as directed by Consultant.

4.   Counterparts.    This   Agreement   may  be   executed   in  two  or   more
     ------------
     counterparts,  each  of which shall be deemed to be an original, but all of
     which  together shall constitute one and the same instrument. Any signature
     by  facsimile  shall  be valid and binding as if an original signature were
     delivered.

5.   Captions.  The  caption  headings  in  this  Agreement  are for convenience
     --------
     of reference only and are not intended and shall not be construed as having
     any substantive effect.

6.   Governing  Law.   This  Agreement   shall  be   governed,  interpreted  and
     --------------
     construed in accordance with the laws of the state of California applicable
     to agreements entered into and to be performed entirely therein.

7.   Arbitration.  Any  controversy,  claim,  or  counterclaim arising from this
     -----------
     agreement  shall  be  submitted  to  and  decided  by  final   and  binding
     arbitration  by a single arbitrator administered in Los Angeles, California
     by  the  American  Arbitration  Association under its commercial rules. THE
     PARTIES  HEREBY  WAIVE ANY RIGHT TO TRIAL BY JURY IN ANY PROCEEDING ARISING
     OUT  OF  OR  RELATING  TO  THIS  AGREEMENT  OR  ANY  OF  THE   CONTEMPLATED
     TRANSACTIONS,  WHETHER  NOW  EXISTING  OR  HEREAFTER  ARISING,  AND WHETHER
     SOUNDING IN CONTRACT, TORT OR OTHERWISE. THE PARTIES AGREE THAT ANY OF THEM
     MAY FILE A COPY OF THIS PARAGRAPH WITH ANY COURT AS WRITTEN EVIDENCE OF THE
     KNOWING,  VOLUNTARY  AND   BARGAINED-FOR   AGREEMENT   AMONG   THE  PARTIES
     IRREVOCABLY  TO  WAIVE  TRIAL  BY  JURY  AND THAT ANY PROCEEDING WHATSOEVER
     BETWEEN  THEM  RELATING  TO  THIS  AGREEMENT  OR  ANY  OF  THE CONTEMPLATED
     TRANSACTIONS  SHALL  INSTEAD BE RESOLVED BY BINDING ARBITRATION AS PROVIDED
     HEREIN.

8.   Entire  Agreement/Modifications.   This   Agreement,   along   with   the
     -------------------------------
     attached  Indemnification  Agreement,  which is incorporated herein by this
     reference,  constitutes  the  entire  agreement  between  the  parties  and
     supersedes  all  prior  understandings  and  agreements,  whether  oral  or
     written,  regarding  Consultant's  retention  by the Client. This Agreement
     shall  not  be  altered or modified except in writing, duly executed by the
     parties hereto.

9.   Severability.  If  any  term,  covenant  or provision, or any part thereof,
     ------------
     is  found  by any court of competent jurisdiction to be invalid, illegal or
     unenforceable  in  any  respect, the same shall not affect the remainder of
     such  term, covenant or provision, any other terms, covenants or provisions
     or  any  subsequent  application  of such term, covenant or provision which
     shall  be  given the maximum effect possible without regard to the invalid,
     illegal  or  unenforceable term, covenant or provision, or portion thereof.

<PAGE>

     In  lieu  of  any  such  invalid,  illegal  or unenforceable provision, the
     parties hereto intend that there shall be added as part of this Agreement a
     term, covenant or provision as similar in terms to such invalid, illegal or
     unenforceable  term,  covenant  of  provision,  or  part thereof, as may be
     possible and be valid, legal and enforceable.

     IN WITNESS HEREOF, the parties hereto have duly executed and delivered this
Agreement as of the day and year first above written.

Vijay Alimchandani,                              National Parking Systems, Inc.
dba Financial Systems International

By: /s/ Vijay Alimchandani                    By: /s/ Marc Ebersole
   ------------------------                      -------------------------------
Name: Vijay Alimchandani                         Name: Marc Ebersole
Title:                                           Title: President and CEO

<PAGE>

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