SECURED
      PROMISSORY NOTE

    


    
      	$____________	
              ____________,
                2007

            


    

       

    FOR
      VALUE RECEIVED,
      the
      undersigned, KARAT
      PLATINUM LLC, (the
      “Maker”), promises to pay to SENTRA
      CONSULTING CORP.,
      (the
“Payee”), on or before _______________ from the date of this Note (the “Payment
      Date”) the principal sum of ______________________ and 00/100 ($_____________)
      Dollars (the “Principal Amount”), and all interest accrued thereon as provided
      herein.

    


    Interest
      shall accrue on the unpaid balance of the Principal Amount at a rate of ______
      percent (___%) per _______ (the “Interest Rate”). All interest payable hereunder
      shall be computed on the basis of actual days elapsed and shall be due and
      payable on the Payment Date.

    


    Maker
      shall have the right to prepay all or any portion of the outstanding Principal
      Amount and accrued interest thereon at any time without penalty or premium.
      All
      payments hereunder when paid shall be applied first to the payment of all
      accrued interest and the balance shall be applied to the Principal
      Amount.

    


    This
      Note
      shall be secured by all of Maker's right, title and interest, in and to any
      and
      all assets of Maker, whether now existing or hereafter arising or acquired,
      wherever located, together with all attachments, accessions and equipment now
      or
      hereafter affixed thereto or used in connection therewith, all substitutions
      and
      replacements thereof, all supporting obligations thereof, and all proceeds
      thereof, as provided pursuant to the General Security Agreement, dated July
      11,
      2007, as amended, and incorporated herein by reference. 

    


    Notwithstanding
      any provision contained herein, the total liability of Maker for payment of
      interest pursuant hereto, including late charges, shall not exceed the maximum
      amount of such interest permitted by law to be charged, collected, or received
      from Maker, and if any payments by Maker include interest in excess of such
      a
      maximum amount, Payee shall apply such excess to the reduction of the unpaid
      principal amount due pursuant hereto, or if none is due, such excess shall
      be
      refunded.

    


    1. Events
      of Default.
      In case
      one or more of the following events (each, an “Event of Default”) (whatever the
      reason for such Event of Default and whether it shall be voluntary or
      involuntary or be effected by operation of law or pursuant to any judgment,
      decree or order of any court or any order, rule or regulation of any
      administrative or governmental body) shall have occurred and be
      continuing:

    


    a. Default
      in the payment, when due or declared due, of any principal or interest payments
      hereunder.

    


    b. Maker
      makes a general assignment for the benefit of creditors; or, in the absence
      of
      such application, consent, acquiescence or action, a trustee, receiver or other
      custodian is appointed for Maker; or for a substantial part of the property
      of
      Maker; or any bankruptcy, reorganization, debt arrangement or other proceeding
      under any bankruptcy or insolvency law, or any dissolution or liquidation
      proceeding, is authorized or instituted by, or instituted against, Maker; or
      any
      warrant of attachment or similar legal process is issued against any substantial
      part of the property of Maker.

    


    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    c. Any
      representation or warranty made by Maker under this Note shall be untrue or
      misleading in any material respect when made.

    


    d. Maker
      shall have breached any of its covenants and agreements hereunder.

    


    then,
      in
      each case where an Event of Default occurs, the Payee, by notice in writing
      to
      Maker shall inform Maker of such Event of Default and if such default is not
      cured within seven (7) business days from the date such notice is received
      by
      Maker, then Payee, may, at its option, declare the outstanding Principal Amount
      to be due and payable immediately, and upon any such declaration the same shall
      become immediately due and payable. 

    


    2.
      General.

    


    a. This
      Note
      shall be binding upon and inure to the benefit of and be enforceable by the
      respective successors and assigns of the Maker and Payee.

    


    b. All
      notices, requests, claims, demands and other communications given or made
      pursuant hereto shall be in writing and shall be deemed to have been duly given
      if delivered in person, overnight courier prepaid, or mailed by prepaid first
      class registered or certified mail, postage prepaid, return receipt requested
      to
      the respective parties at the following addresses (or at such other address
      for
      a party as shall be specified in a notice given in accordance with this
      Section):

    


    
      	(a)	
              If
                to the Maker:

            
	 	 
	 	
              Karat
                Platinum LLC

            
	 	
              15
                Hoover Street

            
	 	
              Inwood,
                New York 11096

            
	 	
              Attention:
                Chief Executive Officer

            
	 	 
	
              (b)

            	
              With
                copies to:

            
	 	 
	 	
              Horowtiz
                & Riser

            
	 	
              30
                Broad Street

            
	 	
              New
                York, NY 10004

            
	 	
              Attention:
                Sam Riser, Esq.

            


    

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    
      	 	 
	
              (c)

            	
              If
                to Payee:

            
	 	 
	 	
              Sentra
                Consulting Corp. 

            
	 	
              466
                Central Avenue, Suite 200 

            
	 	
              Cedarhurst,
                New York 11516

            
	 	
              Attention:
                Chief Executive Officer

            
	 	 
	
              (c)

            	
              With
                copies to:

            
	 	 
	 	
              David
                Lubin & Associates, PLLC

            
	 	
              26
                East Hawthorne Avenue

            
	 	
              Valley
                Stream, NY 11580

            
	 	
              Attn:
                David Lubin, Esq.

            


    

     

    All
      such
      notices, requests and other communications will (i) if delivered personally
      to
      the address as provided in this Section, be deemed given upon delivery, (ii)
      if
      delivered by overnight courier to the address as provided in this Section,
      be
      deemed given on the earlier of the first business day following the date sent
      by
      such overnight courier or upon receipt or (iii) if delivered by mail in the
      manner described above to the address provided in this Section, be deemed given
      on the earlier of the third business day following mailing or upon
      receipt.

    


    c. This
      Note
      is to be governed by and construed in accordance with the laws of the State
      of
      New York. In any action brought under or arising out of this Note, the Maker
      hereby consents to the in personam jurisdiction of any state or federal court
      sitting in New York, New York, waives any claim or defense that such forum
      is
      not convenient or proper, and consents to service of process by any means
      authorized by New York law.

    


    d.
       Maker
      hereby waives presentment, demand for payment, protest, and all other demands
      and notices in connection with the delivery, acceptance, performance and
      enforcement of this Note and authorizes Payee, without notice or further
      consent, to grant extensions of time in the payment of any monies under this
      Note, and to waive compliance of any provision of this Note.

    


    e. In
      the
      event of a default in the payment of this Note, Maker shall pay Payee's and
      expenses of collection, including attorneys’ fees and costs. 

    


    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    IN
      WITNESS WHEREOF, the undersigned has duly executed this Note on the date first
      set forth above.

    


    
      	 	
              KARAT
                PLATIINUM LLC

            
	 	 
	 	 
	 	
              By:

            
	 	
              Name:
                

            
	 	
              Title: