Document:

Exhibit
        10.2

      

      April
        28,
        2008

       

      
        	To:	Samoyed Energy
                Corp.

        	 	2440, 10303 Jasper
                Avenue

        	 	Edmonton, Alberta T5J
                3N6

        	 	Attention: Lisa Jacobson,
                Secretary

        	 	 

        	 	
                Advanced
                  Voice Recognition Systems,
                  Inc.

              

      

      
        	 	
                112
                  E. Spruce Street

              

        	 	Mitchell, South Dakota
                5731

        	 	Attention: Walter Geldenhuys, President
&
                CEO

      

       

      Dear
        Ladies and Gentlemen:

      

      The
        undersigned holder of 3,500,000 shares of the common stock of Samoyed Energy
        Corp., a Nevada corporation (“SMYD Common Stock”) (the “Holder”)
        understands that Samoyed Energy Corp. (“SMYD”),
        and
        Advanced Voice Recognition Systems, Inc., a Colorado corporation (“AVRS”),
        have
        entered into a Letter of Intent dated January 29, 2008, as amended on March
        28,
        2008 (the “LOI”).
        The
        LOI and amendment thereto were filed as exhibits to SMYD’s Current Reports on
        Form 8-K filed with the U.S. Securities and Exchange Commission (the
“SEC”)
        on
        February 4, 2008 and March 31, 2008, respectively. Pursuant to the LOI, SMYD,
        AVRS and the stockholders of AVRS (the “AVRS
        Stockholders”)
        are
        entering into a transaction (the “Exchange”)
        whereby
        the AVRS Stockholders will exchange all of the issued and outstanding shares
        of
        common stock of AVRS for an aggregate of 140,000,000 shares of common stock
        of
        SMYD. 

       

      SMYD,
        AVRS and the AVRS Stockholders have entered into a Stock Exchange Agreement
        dated April 14, 2008 (the “Stock
        Exchange Agreement”)
        to
        evidence the Exchange. A copy of the Stock Exchange Agreement was filed as
        Exhibit 10.1 to SMYD’s Current Report on Form 8-K filed with the SEC on May 1,
        2008.

       

      The
        Holder understands that delivery of this letter agreement (this “Agreement”)
        is a
        condition to closing the Stock Exchange Agreement. This Agreement sets forth
        the
        terms and conditions under which the Holder agrees to pay to SMYD an amount
        equal to $1,750,000 within ninety (90) days of the Closing (as defined in
        the
        Stock Exchange Agreement), or in the alternative, tender to SMYD for
        cancellation two (2) shares of SMYD Common Stock for every $1 not paid. All
        dollar amounts stated in this Agreement are in United States
        Dollars.

       

      In
        consideration of the foregoing, and for other good and valuable consideration,
        the receipt and sufficiency of which are hereby acknowledged, the Holder
        agrees
        as follows:

       

      
        	1.	
                Agreement
                  to Pay; Forfeiture of Shares; Waiver. On or before August 19, 2008 (90
                  days after the Closing, such date to be referred to herein as the
                  “Payment
                  Date”),
                  Holder shall pay to SMYD $1,750,000. In the event SMYD does not
                  receive
                  the Payment on or before the Payment Date, Holder shall tender
                  its shares
                  of SMYD Common Stock to SMYD no later than the Payment Date for
                  immediate
                  cancellation by SMYD at a rate of two (2) shares of SMYD Common
                  Stock for
                  every $1 not received by SMYD on or before the Payment Date. Holder
                  agrees
                  that, in the event it tenders its shares of SMYD Common Stock to
                  SMYD for
                  cancellation, upon tendering the shares, Holder will not have any
                  claim
                  against SMYD, AVRS or any affiliate of SMYD or AVRS, including
                  but not
                  limited to, any claim for stock or other equity interests of any
                  kind, or
                  any claim based upon breach of contract, discrimination, violation
                  of
                  public policy, negligence and/or any other common law, statutory
                  or other
                  claim whatsoever, and Holder shall not bring any claim or commence
                  any
                  litigation against SMYD, AVRS or any affiliate of SMYD or AVRS
                  relating to
                  any of the foregoing.

              

      

    

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    

       

       

      
        	2.	Stock Power. Simultaneous with
                delivering an executed original of this Agreement, Holder shall deliver
                to
                SMYD a duly executed stock power in the form of the attached Exhibit
                A.
                Set forth on Exhibit A is the Certificate Number(s) for the 3,500,000
                shares of SMYD Common Stock held by Holder. In the event SMYD receives
                the
                entire Payment on or before the Payment Date, SMYD shall return the
                stock
                power to Holder. In the event SMYD receives less than the entire
                Payment
                by the Payment Date, (a) if SMYD did not receive any of the Payment,
                Holder shall deliver to SMYD for cancellation, stock certificate(s)
                evidencing 3,500,000 shares of SMYD Common Stock, or (b) if SMYD
                receives
                only a portion of the Payment, Holder shall delivery to SMYD certificates
                representing that number of shares of SMYD Common Stock equal to
                two (2)
                shares of SMYD Common Stock for each $1 not paid to SMYD in accordance
                with this Agreement.

        	 	 

        	3.	Authority; Ownership. This
                Agreement constitutes the legal, valid, and binding obligation of
                Holder,
                enforceable against Holder in accordance with its terms. Holder has
                the
                absolute and unrestricted right, power, authority, and capacity to
                execute
                and deliver this Agreement and to perform its obligations under this
                Agreement.
                As
                of the date hereof and the date, if any, on which Holder tenders
                for
                cancellation the shares subject to this Agreement, Holder is the
                record and beneficial owner and holder of the shares of the SMYD
                Common
                Stock subject to this Agreement, free and clear of any liens or
                encumbrances.

        	 	 

        	4.	Governing Law. THIS AGREEMENT SHALL BE
                GOVERNED AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS AND DECISIONS
                OF THE STATE OF COLORADO, WITHOUT REGARD TO THE CONFLICT OF LAWS
                PROVISIONS THEREOF.

        	 	 

        	5.	Captions. Section captions and headings
                used in this Agreement are for convenience only, and shall not affect
                the
                construction of this Agreement.

        	 	 

        	6.	Counterparts and Execution of
                Agreement. This Agreement may be executed in any number of
                counterparts and by the different parties hereto on separate counterparts,
                and each such counterpart shall be deemed to be an original, but
                all such
                counterparts shall together constitute one and the same agreement.
                The
                exchange of copies of this Agreement and of signature pages by facsimile
                transmission shall constitute effective execution and delivery of
                this
                Agreement as to the parties and may be used in lieu of the original
                Agreement for all purposes. Signatures of the parties transmitted
                by
                facsimile shall be deemed to be their original signatures of all
                purposes.

        	 	 

        	7.	No Assignment by Holder. Holder may not
                assign its rights or obligations set forth in this
                Agreement.

      

       

      
        
          
          

        

        
          
          

          
            

          

        

        
          
          

        

      

       

       

      
        	8.	Enforceability. The parties further
                acknowledge and agree that the enforceability of this Agreement as
                it
                pertains to the undersigned Holder shall not be dependent upon obtaining
                an executed Agreement from any holder of SMYD’s
                securities.

      

       

      
        	9.	Information. Holder acknowledges that
                it has all information needed to enter into the agreements and make
                the
                waivers contemplated by this Agreement, and if it has requested any
                information from SMYD, Holder acknowledges receiving the
                same.

      

       

      
        [Remainder
          of Page Intentionally Left Blank]

         

        
          
            
            

          

          
            
            

            
              

            

          

          
            
            

          

        

      

    

     

    

      If
        you
        accept the foregoing terms, please execute in the space provided below and
        return one copy to SMYD at the above fax number. 

       

      Sincerely,

      

      HOLDER:

      

      Signature
        of Individual Holder: 
        
          

        

      

       

      Printed
        Name of Individual Holder:

      
        

      

       

      
        

      

      Printed
        Name of Entity (if applicable)

       

      
        	
                By
                  (Signature):

              	 	 	 
	 	
                Name
                  (printed)

              	 	 
	 	
                Title:
                  

              	 	 
	 	 	 	 
	 	 	 	 
	Address	 	 	 
	 	 	 	 
	 	 	 	 
	City,
                State,
                Postal or Zip Code, Country

      

       

      [Signature
        Page to Letter Agreement]

      
        
          
          

        

        
          
          

          
            

          

        

        
          
          

        

      

       

      

        EXHIBIT
          A

        

        Form
          of Stock Power

        

        

        STOCK
          POWER

        

        The
          undersigned, for good and valuable consideration, does hereby transfer
          and
          assign the common stock of Samoyed Energy Corp. (the “Company”), represented by
          the attached certificate number (s) __________ (the “Shares”), to
          ___________________________ and does hereby irrevocably appoint
          ________________________ as my attorney-in-fact to transfer the said Shares
          on
          the books of the Company with full power of substitution in the
          premises.

         

        Dated:

        
          

        

        

        [INSERT
          NAME OF COMPANY]

         

        By:
          

        
          

        

         

        
        

        Name:

        
          

        

         

        Title:Unassociated Document

    SECOND
      AMENDMENT TO REGISTRATION RIGHTS AGREEMENT 

    

    THIS
      SECOND AMENDMENT TO REGISTRATION RIGHTS AGREEMENT (the “Amendment”) is made and
      entered into as of this 19th day of May, 2008, by and among Sonterra Resources,
      Inc., a Delaware corporation, (the “Company”), and The Longview Fund, L.P., a
      California limited partnership (“Buyer”).

    

    In
      consideration of the mutual covenants and agreements set forth herein and for
      good and valuable consideration, the receipt and sufficiency of which are hereby
      acknowledged, the parties agree to amend that certain Registration Rights
      Agreement, dated as of February 14, 2008, as amended by that certain First
      Amendment to Registration Rights Agreement, dated as of March 12 2008 (as
      amended, the “Agreement”), between the Company and Buyer.

    

    Section
      1. All
      capitalized terms used but not defined in this Amendment shall have the
      respective meanings ascribed to such terms in the Agreement. 

    

    Section
      2. The
      definition of “Initial Filing Deadline” contained in Section 1(i) of the
      Agreement is hereby amended and restated to read in its entirety as
      follows:

    

    “i.
      “Initial Filing Deadline” means July 30, 2008; provided, however that, if on the
      Exchange Closing Date the Warrant Registrable Securities are not then eligible
      for sale on a delayed or continuous basis by the Investors pursuant to Rule
      415,
      the Initial Filing Deadline shall be the later of (i) July 30, 2008 and (ii)
      the
      earlier of (A) the date that is the tenth (10th) Business Day following the
      date
      on which the Investors shall have delivered to the Company the information
      required by Item 508 of Regulation S-K under the Securities Act with respect
      to
      a plan of distribution for the Warrant Registrable Shares other than in
      accordance with Rule 415 and (B) the first date on which the Warrant Registrable
      Securities are eligible for sale on a delayed or continuous basis by the
      Investors pursuant to Rule 415.”

    

    Section
      3. As
      amended by this Amendment, the parties hereto agree the Agreement remains in
      full force and effect and nothing herein shall affect, or be deemed to be a
      waiver of, the other terms and provisions of the Agreement.

    

    Section
      4. This
      Amendment may be executed in two or more identical counterparts, all of which
      shall be considered one and the same agreement and shall become effective when
      counterparts have been signed by each party and delivered to each other party.
      In the event that any signature to this Amendment or any amendment hereto is
      delivered by facsimile transmission or by e-mail delivery of a “.pdf” format
      data file, such signature shall create a valid and binding obligation of the
      party executing (or on whose behalf such signature is executed) with the same
      force and effect as if such facsimile or “.pdf” signature page were an original
      thereof. No party hereto shall raise the use of a facsimile machine or e-mail
      delivery of a “.pdf” format data file to deliver a signature to this Amendment
      or any amendment hereto or the fact that such signature was transmitted or
      communicated through the use of a facsimile machine or e-mail delivery of a
      “.pdf” format data file as a defense to the formation or enforceability of a
      contract, and each party hereto forever waives any such defense.

    

    Section
      5. This
      Amendment and the Agreement (as amended hereby) represent the final agreement
      of
      the parties hereto with respect to the matters contained herein and may not
      be
      contradicted by evidence of prior or contemporaneous agreements, or prior or
      subsequent oral agreements, between the parties hereto.

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    IN
      WITNESS WHEREOF, the parties hereto have executed this Amendment as of the
      date
      first above written.

     

    
      	 	 	 
	 	COMPANY:
	 	 
	 	SONTERRA RESOURCES, INC.
	 
 	 
 	 
 
	 	By:	 
              
	 	Name:	Michael J. Pawelek
	 	Title: 	President

    

    : 

    
      
        	 	 	 
	 	BUYER:
	 	 
	 	THE LONGVIEW FUND, L.P.
	 
 	 
 	 
 
	 	By:	
                Viking
                  Asset Management, Ltd.

                Its
                  General Partner

              
	 	 	 
	 	By:	
                Viking Asset Management, LLC

                Its
                  Investment Advisor

              
	 	 	 
	 	By:	  
	 	Name:	  
	 	Title:	 

      

      :

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