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                                 CALL AGREEMENT

HOLDER OF CALL:                STONEHAVEN REALTY TRUST (the "Company")

ISSUER OF CALL:                VENTRUE ONE REAL ESTATE LLC ("Venture")

SHARES SUBJECT TO CALL: 366,670 shares of the Common Stock $.01 par value of the
Company (the "Shares"), to the extent some or all of said Shares are purchased
by Venture pursuant to a Warrant Agreement (the "Warrant Agreement") between the
parties.

STRIKE "CALL" PRICE:           $6.375 per share (the "Price")

Venture hereby grants to the Company, a limited right to purchase the Shares
(the "Call"), if such Shares have been purchased by Venture pursuant to the
Warrant Agreement, on the terms and conditions set forth herein.

1.       NUMBER OF SHARES SUBJECT TO CALL. The number of Shares subject to the
         Call hereunder shall be the same number of Shares purchased by Venture
         pursuant to the Warrant Agreement, but in no event greater than 366,670
         Shares, except as adjusted for stock splits, stock dividends,
         combinations and recapitalizations. The number of Shares subject to the
         Call shall be adjusted from time to time to reflect stock splits, stock
         dividends, combinations and recapitalizations. If there is a merger or
         consolidation of the Company with another entity and such merger or
         consolidation does not result in an early expiration/termination of the
         Call pursuant to paragraph 3 below, Venture shall execute and deliver
         to the new entity an appropriate amendment to this Call Agreement so
         that the Call applies to Venture's holdings in the new entity.
         Notwithstanding the foregoing, the number of Shares subject to the Call
         shall be reduced by one thousand (1,000) for every thirty thousand
         dollars ($30,000.00) of gross revenue collected by Netlink
         International, Inc.'s ("Netlink") website referred to as RERFP.com,
         beginning on the date of this Call Agreement and continuing through the
         date which is thirty (30) days prior to the Expiration Date of the
         Call. Gross revenue of the RERFP.com website shall include revenue from
         all sources except for taxes collected and direct reimbursement of
         expenses from customers. At such time as the gross revenue of the
         RERFP.com website, as defined herein, equals or exceeds Eleven Million
         Dollars ($11,000,000), all the unexercised Calls shall terminate and
         expire. The Company shall provide Venture with monthly statements of
         gross revenues of the RERFP.com website which statements shall reflect
         the gross revenue as defined herein.

2.       EXERCISE OF THE CALL. The Company may exercise the Call, if at all,
         only during a thirty (30) day period which shall begin on the date or
         dates that Venture exercises its warrants pursuant to the Warrant
         Agreement. Each such exercise of its warrants by Venture pursuant to
         the Warrant Agreement shall allow the Company to exercise the Call for
         number of Shares being exercised under the Warrant Agreement, reduced,
         if applicable, pursuant to paragraph 1 above. After the end of each/any
         thirty (30) day period, the Call shall terminate and expire for said
         Shares, if not exercised.

3.       EARLY EXPIRATION/TERMINATION OF THE CALL. The Call shall terminate and
         expire (the "Expiration Date") upon the date of any "Change of Control"
         as that term is defined in paragraph 7 of a certain Agreement dated
         March 21, 2000. The Call shall also terminate and expire if Venture's
         warrants expire pursuant to paragraph 2 of the

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         Warrant Agreement or if Venture purchases any Shares during the twenty
         (20) day period referred to in said paragraph 2 of the Warrant
         Agreement.

4.       MECHANICS OF EXERCISE OF THE CALL. Each/any Call shall be exercised by
         the Company by delivering to Venture a notice of exercise indicating
         the number of Shares that the Company desires to purchase together with
         a check in an amount equal to the product of the Price and the number
         of Shares to be purchased. The Shares acquired upon exercise of the
         Call shall be deemed to be transferred from Venture to the Company on
         the date on which the Call is exercised. As soon as practical after the
         exercise of the Call, and payment of the purchase price, Venture will
         deliver the requisite certificate or certificates representing the
         Shares being transferred.

5.       BINDING EFFECT. This Call Agreement shall inure to the benefit of and
         be binding upon the parties hereto and their respective successors and
         assigns. If possible, this Call Agreement shall be construed along with
         and in addition to any other agreements which the Company and Venture
         may enter into, but any provision in this Call Agreement which
         contradicts any provision of any other such agreement shall take
         precedence and be binding over such other provision.

This Call Agreement is effective as of March 28, 2000.

STONEHAVEN REALTY TRUST                      VENTURE ONE REAL ESTATE LLC

By:    /s/ Duane H. Lund                     By:     /s/ Mark Goode
   --------------------------                   ------------------------
      Duane H. Lund                                Mark B. Goode, Member
     Chief Executive Officer<PAGE>

                       WARRANT TO PURCHASE SHARES OF STOCK

Date of Issuance:  May 1, 2000 (the "DATE OF ISSUANCE")

Name of Holder:  VENTURE ONE REAL ESTATE LLC (the "HOLDER")

Name of Issuer:  Stonehaven Realty Trust (the "COMPANY")

Securities Issuable upon Exercise: Common Stock $.01 par value (the
"SECURITIES")

Initial Number of Securities 700,000 (the "INITIAL NUMBER OF SECURITIES")

Exercise Price: 350,000 securities @ $6.375 (the "EXERCISE PRICE") and 350,000
securities @ $9.375 (the "EXERCISE PRICE")

          In consideration of the transfer of certain rights in a business and
marketing plan for REDOCS and REBUILD as defined and evidenced by a bill of sale
dated June 22, 2000, from the Holder to Netlink International, Inc., a Delaware
corporation and subsidiary of the Company ("Netlink"), the Company hereby grants
to the Holder the right to purchase the Initial Number of the Securities on the
terms set forth herein:

1. NUMBER OF SHARES SUBJECT TO WARRANT. The Company hereby grants Holder the
right to purchase the Initial Number of Securities at per share purchase price
equal to the Exercise Price. The Initial Number of Securities and the Exercise
Price shall be adjusted from time to time to reflect stock splits, stock
dividends, combinations and recapitalizations. If there is a merger or
consolidation of the Company with another entity, the Company or its successor
entity will execute and deliver to the Holder a new warrant in substitution of
this Warrant that will provide that upon exercise of such new warrant the Holder
shall receive the number and kind of securities, money and property receivable
upon such merger or consolidation by the holders of the securities issuable
hereunder.

2. EXPIRATION. This Warrant will expire on the earlier of: (a) July 1, 2007; or
(b) upon acquisition of all of the stock or substantially all of the assets of
the Company or the sale of the stock or substantially all of the assets of
Netlink, or the merger of the Company or Netlink where the Company or Netlink is
not the surviving entity; provided, however, the Company agrees to provide not
less than twenty (20) days notice of an impending acquisition, sale or merger to
the Holder.

3. MECHANICS OF EXERCISE. This Warrant shall be exercised by delivering to the
Company a notice of exercise indicating the number of shares that the Holder
wishes to purchase together with a check in an amount equal to the product of
the per share Exercise Price and the number of Securities to be purchased;
PROVIDED, HOWEVER, that instead of paying cash to exercise this Warrant, the
Holder may waive its right to purchase the number of Securities equal in value
(determined by subtracting the Exercise Price from the fair market value) to the
product of the per share Exercise Price and the number of Securities to be
acquired. The Securities acquired upon exercise of this Warrant shall be deemed
to be issued as of the close of business on the date on which this Warrant is
exercised. As soon as practical after the exercise of this Warrant and payment
of the purchase price, the Company will cause to be issued in the name of and
delivered to the Holder, or as such Holder may direct, a certificate or
certificates representing the shares purchased. The warrants shall not be
exercised prior to one year from the date hereof except as outlined in paragraph
2 above.

4. RESERVATION OF STOCK. A number of shares of common stock sufficient to
provide for the exercise of the Warrant upon the basis herein set forth shall at
all times be reserved by the Company for the exercise thereof.

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5. MISCELLANEOUS. The Company will not, in any manner or by any action, avoid or
seek to avoid the observance or performance of the covenants, stipulations or
conditions to be observed or performed hereunder by the Company, but will, at
all times in good faith, assist, insofar as it is able, in the carrying out of
all provisions hereof and in the taking of all other action which may be
necessary in order to protect the rights of the Holder against dilution. All
shares of common stock or other securities issued upon the exercise of the
Warrant shall be validly issued, fully paid and nonassessable. This Warrant
shall be governed under the laws of the State of Maryland.

6. BINDING EFFECT. This Warrant shall inure to the benefit of and be binding
upon the parties hereto and their respective heirs, executors, administrators,
successors and assigns. Notwithstanding the foregoing, this Warrant is only
transferable by the Holder subject to any and all applicable securities laws
governing such transfer and after thirty (30) days notice to the Company
including the name and address of the transferee. If possible, this Warrant
shall be construed along with and in addition to any other agreement which the
Company and Holder may enter into, but any provisions in this Warrant which
contradict any provision of any other such agreement shall take precedence and
be binding over such other provision.

          This Warrant has been duly executed and issued as of June 22, 2000.

STONEHAVEN REALTY TRUST

By:    /s/ Duane H. Lund
   ------------------------------------------
      Duane H. Lund, Chief Executive Officer

                                                 ACCEPTED BY:

                                                 VENTURE ONE REAL ESTATE LLC

                                                 By:     /s/ Mark Goode
                                                    ----------------------------
                                                 Its:     Member
                                                    ----------------------------

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