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EXHIBIT 10.7

OFFICE BUILDING LEASE

TABLE OF CONTENTS

|ARTICLE I -     | DEFINED TERMS                                               |    | 1 
|--------------- | ----------------------------------------------------------- | -- | --
|                |                                                             |    |   
|1.1             | Tenant                                                      |    | 1 
|1.2             | Premises                                                    |    | 1 
|1.3             | Term                                                        |    | 1 
|1.4             | Base Rental                                                 |    | 1 
|1.5             | Base Year                                                   |    | 1 
|1.6             | Landlord's Share of Building Operating Costs                |    | 1 
|1.7             | First Year Estimated Energy Costs                           |    | 1 
|1.8             | Prepaid Rent                                                |    | 1 
|1.9             | Security Deposit                                            |    | 1 
|1.10            | Premises Use                                                |    | 1 
|1.11            | Tenant's Commercial General Liability Insurance             |    | 1 
|1.12            | Addresses for Notices and Payment of Rent and Other Charges |    | 2 
|1.13            | Broker                                                      |    | 2 
|1.14            | Exhibits                                                    |    | 2 
|1.15            | Incorporation                                               |    | 2 
|                |                                                             |    |   
|ARTICLE II -    | PREMISES, COMMON AREAS                                      |    | 2 
|                |                                                             |    |   
|2.1             | Demise                                                      |    | 2 
|2.2             | Rentable Area of Building                                   |    | 2 
|2.3             | Acceptance of Premises and Building by Tenant               |    | 3 
|2.4             | Walls, Ceilings                                             |    | 3 
|2.5             | Common Areas                                                |    | 3 
|                |                                                             |    |   
|ARTICLE III -   | TERM                                                        |    | 3 
|                |                                                             |    |   
|3.1             | Lease Term                                                  |    | 3 
|3.2             | Delivery of Premises                                        |    | 4 
|3.3             | Holding Over by Tenant                                      |    | 4 
|                |                                                             |    |   
|ARTICLE IV -    | TENANT'S MONETARY OBLIGATIONS                               |    | 4 
|                |                                                             |    |   
|4.1             | Base Rental                                                 |    | 4 
|4.2             | Tenant's Share of Certain Building Costs                    |    | 5 
|                | 4.2.1     Pro Rata Share                                    | 5 
|                | 4.2.2     Building Operating Costs                          | 5 
|                | 4.2.3     Energy Costs                                      | 5 
|                | 4.2.4     Electricity Savings Expenditures                  | 6 
|                | 4.2.5     Estimated Costs                                   | 6 
|4.3             | Adjustment for Occupancy                                    |    | 7 
|4.4             | Prepaid Rent                                                |    | 7 
|4.5             | Security Deposit                                            |    | 7 
|4.6             | Taxes on Tenant's Property                                  |    | 7 
|4.7             | Late Payments                                               |    | 7 
|4.8             | Interest                                                    |    | 7 
|4.9             | Supervision Fee                                             |    | 8 
|4.10            | Additional Rental                                           |    | 8 
|                |                                                             |    |   
|ARTICLE V -     | CONSTRUCTION                                                |    | 8 
|                |                                                             |    |   
|ARTICLE VI -    | SERVICES AND UTILITIES                                      |    | 8 
|                |                                                             |    |   
|6.1             | Services by Landlord                                        |    | 8 
|6.2             | Tenant's Obligations                                        |    | 9 
|6.3             | Additional Services                                         |    | 9 
|                | 6.3.1     Heating and Air Conditioning                      | 9 
|                | 6.3.2     Electricity                                       | 10
|                | 6.3.3     Cleaning                                          | 10
|6.4             | Interruption                                                |    | 10
|                |                                                             |    |   
|ARTICLE VII -   | USE AND OCCUPANCY                                           |    | 10
|                |                                                             |    |   
|7.1             | Quiet Enjoyment                                             |    | 10
|7.2             | Tenant's Use                                                |    | 11
|7.3             | Rules and Regulations                                       |    | 11
|7.4             | Additional Covenants of Tenant                              |    | 11
|                | 7.4.1     Applicable Laws                                   | 11
|                | 7.4.2     Waste, Hazards                                    | 11
|7.5             | Entry by Landlord                                           |    | 11
|7.6             | Building Name                                               |    | 11
|                |                                                             |    |   
|ARTICLE VIII -  | REPAIRS, ALTERATIONS                                        |    | 12
|                |                                                             |    |   
|8.1             | Repairs and Maintenance                                     |    | 12
|8.2             | Surrender of Premises                                       |    | 12
|8.3             | Alterations and Additions by Tenant                         |    | 12
|                | 8.3.1     Approval Required                                 | 12
|                | 8.3.2     Complex Alterations                               | 13
|                | 8.3.3     Standard of Work                                  | 13
|                | 8.3.4     Ownership of Alterations                          | 13
|8.4             | Mechanics and Materialmen's Liens                           |    | 14
|8.5             | Control of Building and Common Areas                        |    | 14
|                |                                                             |    |   
|ARTICLE IX -    | INSURANCE                                                   |    | 14
|                |                                                             |    |   
|9.1             | Tenant's Insurance                                          |    | 14
|                | 9.1.1     Liability Insurance                               | 14
|                | 9.1.2     Property Insurance                                | 14
|                | 9.1.3     Policy Form                                       | 15
|9.2             | Indemnity                                                   |    | 15
|                | 9.2.1     Waiver and Indemnity by Tenant                    | 15
|                | 9.2.2     Indemnity by Landlord                             | 15
|9.3             | Landlord's Insurance                                        |    | 16
|9.4             | Waiver of Subrogation                                       |    | 16
|9.5             | Control of Proceeds                                         |    | 16
|                |                                                             |    |   
|ARTICLE X -     | ASSIGNMENT AND SUBLETTING                                   |    | 16
|                |                                                             |    |   
|10.1            | Consent                                                     |    | 16
|10.2            | Landlord's Option                                           |    | 17
|10.3            | Definition of Assignment                                    |    | 17
|10.4            | Bankruptcy, Insolvency                                      |    | 18
|10.5            | Landlord's Assignment                                       |    | 18
|                |                                                             |    |   
|ARTICLE XI -    | FIRE AND OTHER CASUALTY                                     |    | 18
|                |                                                             |    |   
|11.1            | Total Destruction                                           |    | 18
|11.2            | Partial Destruction                                         |    | 19
|11.3            | No Liability                                                |    | 19
|                |                                                             |    |   
|ARTICLE XII -   | EMINENT DOMAIN                                              |    | 20
|                |                                                             |    |   
|12.1            | Total Taking                                                |    | 20
|12.2            | Partial Taking                                              |    | 20
|12.3            | Award                                                       |    | 20
|                |                                                             |    |   
|ARTICLE XIII -  | DEFAULT BY TENANT                                           |    | 20
|                |                                                             |    |   
|13.1            | Events of Default                                           |    | 20
|                | 13.1.1     Monetary Default                                 | 20
|                | 13.1.2     Nonmonetary Default                              | 20
|                | 13.1.3     Assignment to Creditors                          | 21
|                | 13.1.4     Insolvency                                       | 21
|                | 13.1.5     Receivership                                     | 21
|                | 13.1.6     Abandonment                                      | 21
|                | 13.1.7     Inaccuracy of Financial Information              | 21
|13.2            | Remedies                                                    |    | 21
|                | 13.2.1     Landlord's Remedies                              | 21
|                | 13.2.2     Relet Premises                                   | 23
|                | 13.2.3     Cure Default                                     | 23
|                | 13.2.4     Injunctive Relief                                | 23
|13.3            | Landlord's Damages                                          |    | 23
|13.4            | Remedies Cumulative                                         |    | 23
|13.5            | Joint and Several Liability                                 |    | 23
|13.6            | Landlord's Lien; Security Interest                          |    | 24
|13.7            | Attorneys' Fees                                             |    | 24
|13.8            | Waivers                                                     |    | 24
|13.9            | Landlord's Default                                          |    | 24
|                |                                                             |    |   
|ARTICLE XIV -   | SUBORDINATION AND ATTORNMENT                                |    | 25
|                |                                                             |    |   
|14.1            | Subordination                                               |    | 25
|14.2            | Attornment                                                  |    | 25
|14.3            | Further Documentation                                       |    | 25
|                |                                                             |    |   
|ARTICLE XV -    | CERTIFICATES                                                |    | 26
|                |                                                             |    |   
|15.1            | Estoppel Certificates                                       |    | 26
|15.2            | Financial Statements                                        |    | 26
|                |                                                             |    |   
|ARTICLE XVI -   | INTEREST OF LANDLORD                                        |    | 26
|                |                                                             |    |   
|16.1            | Consents                                                    |    | 26
|16.2            | Force Majeure                                               |    | 26
|16.3            | Best Efforts                                                |    | 26
|16.4            | Exculpation                                                 |    | 26
|16.5            | Sale of Building                                            |    | 27
|                |                                                             |    |   
|ARTICLE XVII -  | NOTICES                                                     |    | 27
|                |                                                             |    |   
|ARTICLE XVIII - | BROKERS                                                     |    | 27
|                |                                                             |    |   
|ARTICLE XIX -   | RELOCATION OF TENANT                                        |    | 28
|                |                                                             |    |   
|ARTICLE XX -    | MISCELLANEOUS                                               |    | 28
|                |                                                             |    |   
|20.1            | No Implied Waiver                                           |    | 28
|20.2            | No Recording                                                |    | 28
|20.3            | Independent Contractor                                      |    | 28
|20.4            | Additional Amenities                                        |    | 28
|20.5            | Survival                                                    |    | 29
|20.6            | Severability                                                |    | 29
|20.7            | Amendments                                                  |    | 29
|20.8            | Binding Effect                                              |    | 29
|20.9            | Gender                                                      |    | 29
|20.10           | Captions                                                    |    | 29
|20.11           | Exhibits                                                    |    | 29
|20.12           | Entire Agreement                                            |    | 29
|20.13           | Counterparts                                                |    | 29
|20.14           | Governing Law and Venue                                     |    | 30
|20.15           | No Reservation; Interpretation                              |    | 30
|20.16           | OFAC Certification                                          |    | 30
|20.17           | Substitution of Premises                                    |    | 30
|                |                                                             |    |   

EXHIBITS

Exhibit "A" - Floor Plan of the Premises

Exhibit "B" - Legal Description of Property

Exhibit "C" - Building Operating Cost Examples

Exhibit "D" - Rules and Regulations

Exhibit "E" - Leasehold Improvements Agreement

Exhibit "F" - Parking Agreement

Exhibit "G"- Acceptance of Premises Memorandum

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OFFICE LEASE AGREEMENT

THIS OFFICE LEASE AGREEMENT (the "Lease") is made and entered into effective as of the 31st day of March, 2006 (the "Effective Date"), between Hall 2601 Network Associates, Ltd., a Texas limited partnership (the "Landlord"), and Tenant (as defined below).

ARTICLE I

DEFINED TERMS

As used in this Lease, the following terms shall have the respective meanings set forth below:

1.1     Tenant:      Nexplore Technologies, Inc. (the "Tenant"), a Texas Corporation.

1.2     Premises:  Designated as Suite 208, outlined and crosshatched on Exhibit "A" attached hereto and containing approximately Three Thousand Three Hundred Twenty-Seven (3,327) Rentable Square Feet on floor two (2) of the Building located at 2601 Network Boulevard, Frisco, Texas.  (Article II)

1.3     Term:  Beginning on the Commencement Date, as defined in Section 3.1 hereof (contemplated to be on or about March 15, 2006 and ending on the last day of the Thirty Seventh (37) full calendar month following the Commencement Date.  (Article III)

1.4     Base Rental:  (a) for month 1 of the Term, no (-0-) Base Rental shall be due and payable; (b) for months 2 through 37 of the Term, inclusive, the amount of Seventy-Three Thousand One Hundred Ninety-Four and no/100 Dollars ($73,194.00) annually [computed on the basis of Twenty-Two and no/100 Dollars ($22.00) per Rentable Square Foot], payable in equal monthly installments of Six Thousand Ninety-Nine and 50/100 Dollars (6,099.50) per month.  (Section 4.1)

1.5     Base Year:  Calendar year 2006.  (Section 4.2)

1.6     Landlord's Share of Building Operating Costs:  The actual Building Operating Costs for the Base Year.

1.7     First Year Estimated Energy Costs:  Seven Thousand Eight Hundred Eighteen and 45/100 Dollars ($7,818.45) annually [computed on the basis of Two and 35/100 Dollars ($2.35) per Rentable Square Foot of the Premises], payable in equal monthly installments of Six Hundred Fifty-One and 54/100 Dollars ($651.54).  (Section 4.2)

1.8     Prepaid Rent:  Six Thousand Ninety-Nine and 50/100 Dollars ($6,099.50) per month applicable to the second month of the Term.  (Section 4.4)

1.9     Security Deposit:  Thirty-Six Thousand Five Hundred Ninety-Seven and No/100 ($36,597.00).  A security deposit refund shall be granted equal to one (1) month's security deposit totaling Six Thousand Ninety-Nine and 50/100 ($6,099.50) and this shall be refunded after the thirteenth (13th) month's rental payment is received.  A second security deposit refund shall be granted equal to two (2) month's security deposit totaling Twelve Thousand One Hundred Ninety-Nine and No/100 ($12,199.00) and this shall be refunded after the twenty-fifth (25th) month's rental payment is received.  (Section 4.5)

1.10     Premises Use:  General office use consistent with a first-class office building.  (Article VII)

1.11     Tenant's Initial Commercial General Liability Insurance Limits:  Minimum protection of not less than $1,000,000 per occurrence for bodily injury and property damage, $1,000,000 per occurrence for personal or advertising injury, and $1,000,000 for general or aggregate liability, together with Three Million and No/100 Dollars ($3,000,000.00) umbrella coverage.  (Section 9.1)

1.12     Addresses for Notices and Payment of Rent and Other Charges:  (Article XVII)

| | To Tenant:                        |  | To Landlord:                       
| | --------------------------------- |  | -----------------------------------
| |                                   |  |                                    
| | Nexplore Technologies, Inc.       |  | Hall 2601 Network Associates, Ltd.,
| | 2601 Network Boulevard, Suite 208 |  | 6801 Gaylord Parkway, Suite 407    
| | Frisco, Texas 75034               |  | Frisco, Texas 75034                
| | Attn:   Edward Mandel             |  | Attn:   Building Manager           
| |                                   |  |                                    
| | with copies of notices to:        |  | with copies of notices to:         
| |                                   |  |                                    
| | Edward Mandel                     |  | Hall Financial Group, Ltd.         
| | 4964 Lorraine Drive               |  | 6801 Gaylord Parkway, Suite 100    
| | Frisco, Texas 75034               |  | Frisco, Texas 75034                
| |                                   |  | Attn:  Mark Depker                 



1.13     Broker:  None.  (Article XVIII)

1.14     Exhibits:  The following-described exhibits (the "Exhibits") are attached to this Lease and made a part of this Lease for all purposes as if fully set forth herein:

Exhibit "A" - Floor Plan of the Premises

Exhibit "B" - Legal Description of Property

Exhibit "C" - Building Operating Cost Examples

Exhibit "D" - Rules and Regulations

Exhibit "E" - Leasehold Improvements Agreement

Exhibit "F" - Parking Agreement

Exhibit "G" - Acceptance of Premises Memorandum



1.15     Incorporation.  Each reference in this Lease or in any exhibit or any attachment to this Lease to any definition set forth in this Article I will be construed to incorporate all of the terms provided under the referenced provision in this Article I.  In the event of any conflict between a provision in this Article I and a provision in any other article of or exhibit, rider or attachment to this Lease, the latter will control.

ARTICLE IIPREMISES, COMMON AREAS

2.1     Demise.  Landlord, in consideration of the rent to be paid and of the covenants and agreements in this Lease to be performed by Tenant, does hereby lease and demise unto Tenant, and Tenant hereby leases from Landlord, the Premises described in Section 1.2, in a building (the "Building") known as 2601 Network Boulevard and situated on a tract of land in the City of Frisco, Collin County, Texas, and more particularly described in Exhibit "B" attached hereto (the "Property"), upon and subject to the terms, covenants and conditions set forth in this Lease, and further subject to all applicable building, zoning and other ordinances and governmental requirements affecting the Building or Premises and to all covenants, encumbrances and other matters of record encumbering or affecting the Building or Premises.

2.2     Rentable Area of Building.  For all purposes of this Lease, Landlord and Tenant hereby agree that there are approximately One Hundred Forty-Three Thousand Three Hundred Eight (143

2.3     Acceptance of Premises and Building by Tenant.  Except for the completion of the Basic Building Improvements and the Tenant Improvements (as each of such terms is defined in the Leasehold Improvements Agreement, if any, attached hereto as Exhibit "E") and except for defects which are not observable upon a reasonable inspection and about which Tenant notifies Landlord within three (3) months after taking possession of the Premises, Tenant accepts the Premises in "AS IS, WITH ALL FAULTS" condition and the taking of possession of the Premises by Tenant will be conclusive evidence as to Tenant that:  (i) the Premises are suitable for the purposes for which the Premises are leased; (ii) the Building and each and every part and appurtenance thereof are in good and satisfactory condition; and (iii) Tenant waives any defects in the Premises and in all other parts of the Building and the appurtenances thereto.  TENANT ACKNOWLEDGES AND AGREES THAT, EXCEPT AS MAY BE OTHERWISE EXPRESSLY PROVIDED IN THIS LEASE (INCLUDING THE LEASEHOLD IMPROVEMENTS AGREEMENT, IF ANY, ATTACHED HERETO), NEITHER LANDLORD NOR ANY LANDLORD-RELATED PARTY (AS SUCH TERM IS DEFINED BELOW) HAS MADE ANY REPRESENTATIONORWARRANTY, EITHER EXPRESS OR IMPLIED, AS TO THE HABITABILITY, MERCHANTABILITY, SUITABILITY, QUALITY, CONDITION OR FITNESS FOR ANY PARTICULAR PURPOSE (COLLECTIVELY, THE "DISCLAIMED WARRANTIES") WITH REGARD TO THE PREMISES OR THE BUILDING; AND TENANT HEREBY WAIVES, TO THE EXTENT PERMITTED BY LAW, THE DISCLAIMED WARRANTIES WITH REGARD TO THE PREMISES AND THE BUILDING.  Tenant agrees, upon the commencement of Tenant's occupancy of the Premises, to execute an Acceptance of Premises Memorandum substantially in the form of the instrument set forth in Exhibit "G" attached hereto.

2.4     Walls, Ceilings.  Landlord reserves the right to use all of the Building, including, without limitation, the Premises, the exterior Building walls, core corridor walls and doors and any core corridor entrance, any terraces or roofs adjacent to the Premises, and any space in or adjacent to the Premises used for shafts, stacks, pipes, conduits, fan rooms, ducts, electric or other utilities, sinks or other Building facilities, as well as access thereto through the Premises, for the purposes of operation, maintenance, decoration and repair, so long as same does not unreasonably interfere with Tenant's use and occupancy of the Premises.  The installation, erection, use and maintenance of any pipes, ducts and conduits in and through the Premises pursuant to this Section 2.4 will not be deemed to interfere with Tenant's use, enjoyment and occupancy of the Premises, provided that such pipes, ducts and conduits are concealed behind walls or above false ceilings to the extent practicable or otherwise boxed against walls or columns in a manner consistent with Tenant's decor.

2.5     Common Areas.  Tenant is hereby granted a nonexclusive, revocable license to use the Common Areas (as hereinafter defined) during the term of this Lease for their intended purposes, in common with others, subject to the terms and conditions of this Lease, including, without limitation, the Rules and Regulations.  For purposes hereof, "Common Areas" will mean all areas, spaces, facilities and equipment made available by Landlord for the common and joint use of Landlord, Tenant and others in and around the Building, including, but not limited to, sidewalks, lobbies, loading areas, Building stairs, elevators, and such other areas and facilities, if any, as are designated by Landlord from time to time as Common Areas.

ARTICLE III

TERM

3.1     Lease Term.  This Lease will be in effect and continue in force during a period beginning on the Effective Date of this Lease and ending on the expiration of the Lease Term, unless this Lease is terminated early or extended to a later date pursuant to the terms of this Lease.  The Term of this Lease shall commence and Rent will accrue beginning on the date ("Commencement Date") which is the earlier to occur of (i) the commencement of occupancy of the Premises by Tenant for the conduct of business, or (ii) the date which is fifteen (15) days following the date upon which Landlord delivers notice to Tenant that the Tenant Improvements have been substantially completed in accordance with Exhibit "E" attached hereto (it being further acknowledged and agreed that Landlord shall provide to Tenant not less than ten [10] business days' prior written  notice of the date that Landlord estimates the Tenant Improvements shall be so substantially completed), and the Term of this Lease will expire on a date (the "Expiration Date") that corresponds to the number of full calendar months after the Commencement Date set forth in Section 1.3, unless sooner terminated in accordance with the provisions of this Lease, it being understood that this Lease terminates on the last day of the applicable calendar month.

3.2     Delivery of Premises.  If possession of the Premises is not actually delivered to Tenant on the contemplated Commencement Date set forth in Section 1.3 for any reason, the obligations of Landlord and Tenant will continue in full force and effect; provided, however, in the event of a delay attributable to an action of Landlord, the rental payable hereunder will not commence until the date that Landlord has actually delivered possession of the Premises to Tenant.  In addition, this Lease will not be void or voidable, nor will Landlord be liable to Tenant for any loss or damage resulting from any delay in delivering possession of the Premises to Tenant.  The aforesaid suspension of rental will constitute Tenant's sole remedy and full settlement of all claims that Tenant might otherwise have against Landlord by reason of the Premises not having been delivered to Tenant on the contemplated Commencement Date.

3.3     Holding Over by Tenant.  If Tenant continues to hold the Premises after the Expiration Date or earlier termination of this Lease, Tenant will pay to Landlord, as Base Rental for the period of such holding over, a daily Base Rental amount equal to the number determined by multiplying the Base Rental for the final month of the Lease Term by one hundred fifty percent (150%) and then dividing that result by thirty (30).  Such amount will be due and payable in advance on the first day of each calendar month during any such holdover period.  Tenant will also pay Landlord any and all costs, expenses or damages sustained by Landlord as a result of such holdover.  During such time as Tenant continues to hold the Premises after the expiration or termination hereof, such holding over will be a tenancy at sufferance, subject to all of the terms, provisions, covenants and agreements of this Lease except as modified by this Section 3.3 with respect to the length of the Term and the amount of the Base Rental.  No payments of money by Tenant to Landlord after the expiration or termination of this Lease or after the giving of any notice of termination by Landlord to Tenant will reinstate, continue or extend the Term or reduce the liability of Tenant to Landlord for damages incurred because of such holding over by Tenant or affect any termination notice given by Landlord to Tenant, and no extension of the Term will be valid unless and until the same will be reduced to writing and signed by both  Landlord and Tenant.

ARTICLE IV

TENANT'S MONETARY OBLIGATIONS

4.1     Base Rental.  Tenant agrees and promises to pay to Landlord at Landlord's offices in the Building (or at such other place as Landlord may designate from time to time), in lawful money of the United States of America, the Base Rental set forth in Section 1.4 hereof.  The monthly installments of Base Rental will be due and payable in advance on the first day of each calendar month during the Term without notice or demand and without any offset or deduction whatsoever.  Should the Term commence on a day other than the first day of a calendar month or terminate on a day other than the last day of a calendar month, Base Rental for any such partial month will be prorated on a daily basis.  Base Rental for the first partial month, if any, will be payable on Commencement Date notwithstanding the receipt by Landlord of any prepaid rent under this Lease.  No payment by Tenant or receipt or acceptance by Landlord of a lesser amount than the correct installment of Base Rental or other amount due from Tenant will be deemed to be other than a payment on account, nor will any endorsement or statement on any check or any letter accompanying any check or payment be deemed an accord and satisfaction, and Landlord may accept such check or payment without prejudice to Landlord's right to recover the balance or pursue any other remedy provided by this Lease or by applicable law.  The acceptance by Landlord of rental payment(s) on a date after the due date of such payment(s) will not be construed to be a waiver of Landlord's right to declare a default for a subsequent late payment.

4.2     Tenant's Share of Certain Building Costs

4.2.1

4.2.2

4.2.3

4.2.4

4.2.5

4.2.5.1     Commencing on the first day of the first month following the delivery to Tenant of each Statement referred to above and on the first day of each month thereafter until delivery to Tenant of the next such Statement, Tenant will pay to Landlord, concurrently with the Tenant's payments of the monthly installments of Base Rental as provided in this Lease, one-twelfth (1/12th) of the Estimated Building Operating Costs and one-twelfth (1/12) of the Estimated Energy Costs, as contained in the Statement.

4.2.5.2     In addition, within thirty (30) days after the date of delivery of the Statement, Tenant will pay to Landlord the balance of the amounts, if any, required to be paid pursuant to Section 4.2.5 for the previous calendar year, or if Tenant has overpaid such amount, Landlord will refund the amount of such overpayment to Tenant, except that Landlord may (at Landlord's sole option) credit any amounts due from Landlord to Tenant against the monthly installments of Base Rental next thereafter coming due.

4.2.5.3     In event that the Commencement Date of this Lease occurs on a day other than the first day of a calendar year, Landlord will notify Tenant of the monthly installments of Estimated Building Operating Costs, if any, for the remainder of such calendar year, no later than thirty (30) days prior to Commencement Date.  For such initial calendar year, the Tenant's Pro Rata Share of the Building Operating Costs shall be prorated based on a fraction the numerator of which shall be the number of days from the Commencement Date to December 31 and the denominator of which is three hundred sixty-five (365).

4.2.5.4     The Base Year Estimated Energy Costs shall be the amount set forth in Section 1.7 above.

4.2.5.5     In the event that this Lease terminates on a date other than the last day of a calendar year, then upon termination Tenant will pay to Landlord a sum equal to Landlord's estimate of the amount due as of the date of termination, such estimate to be based on the facts currently available to Landlord on the termination date.  Landlord and Tenant will thereafter settle the actual amounts owing within thirty (30) days of the final determination of Building Operating Costs and Energy Costs for such year.

4.3     Adjustment for Occupancy.  During any calendar year in which the Building has less than full occupancy, those Building Operating Costs and Energy Costs that are not fixed costs and that under ordinary circumstances vary with variances in occupancy of the Building will be computed as though the Building had been ninety five percent (95%) occupied for the entire calendar year.

4.4     Prepaid Rent.  Contemporaneously with Tenant's execution of this Lease, Tenant will pay to Landlord the sum specified in Section 1.8 hereof, which sum shall be credited to monthly installments of Base Rental as specified in said Section 1.8.

4.5     Security Deposit.  Contemporaneously with the execution of this Lease, Tenant will pay Landlord the sum set forth in Section 1.9 as security for the performance by Tenant under this Lease.  If Tenant defaults with respect to any provision of this Lease, Landlord may, but will not be required to, use, apply or retain all or any part of the Security Deposit for the payment of any rent or any other sum in default, or for the payment of any other amount which Landlord may spend or may become obligated to spend by reason of Tenant's default, or to compensate Landlord for any other loss or damage which Landlord may suffer by reason of Tenant's default.  If any portion of the Security Deposit is so used or applied, Tenant will, upon demand therefor, deposit cash with Landlord in an amount sufficient to restore the Security Deposit to the original amount.  If Tenant fully performs every provision of this Lease to be performed by Tenant, the Security Deposit will be returned to Tenant within thirty (30) days after the Expiration Date, less any sums Landlord has deducted pursuant to this paragraph.  Tenant will not assign or encumber Tenant's interest in the Security Deposit and neither Landlord nor Landlord's successors or assigns will be bound by any such attempted assignment or encumbrance of the Security Deposit.

4.6     Taxes on Tenant's Property; Other Taxes.  Tenant will be liable for and will pay before delinquency all taxes, assessments, license fees, excise and other charges levied or assessed by any governmental or quasi-governmental authority against personal property, furniture or fixtures placed by Tenant in the Premises, the leasehold estate created hereby, or operations at, occupancy of, or conduct of business in or from the Premises.  Tenant shall also pay to Landlord, concurrently with the payments of rent as provided for herein, the amount of any applicable sales, use or excise tax with respect to any such rent, whether the same be levied, imposed or assessed by the State of Texas or any other federal, state, county or municipal governmental entity or agency, including any so called "rent taxes."  If any such taxes for which Tenant is liable are levied or assessed against Landlord or Landlord's property and if Landlord elects to pay the same or if the assessed value of Landlord's property is increased by inclusion of personal property, furniture or fixtures placed by Tenant in the Premises or the leasehold estate created hereby, and Landlord elects to pay the taxes based on such increase, then Tenant will be liable to Landlord for such payment by Landlord, and Tenant will pay to Landlord upon demand that part of such taxes for which Tenant is so liable.

4.7     Late Payments.  Should Tenant fail to pay any installment of Base Rental on or before the fifth (5th) day of each calendar month during the Term, a late charge in an amount equal to five percent (5%) of the installment then due will be paid by Tenant to Landlord at the time of payment of the delinquent sum.  The late charge is in addition to any Interest pursuant to Section 4.8 and is agreed by Landlord and Tenant to be a reasonable estimate of the extra administrative expenses incurred by Landlord in handling such delinquencies.

4.8     Interest.  All monetary obligations of Tenant to Landlord under this Lease remaining unpaid after the due date therefor will bear interest from and after such date until paid at the lesser of (i) the highest lawful rate or (ii) three percent (3%) over the "prime interest rate" announced from time to time by Bank of America  N.A. in Dallas, Texas.  If no due date is established under the other terms and provisions of this Lease, such due date shall be five (5) days after the date upon which Landlord delivers to Tenant written demand for payment.

4.9     Supervision Fee.  If Tenant fails to perform any obligation of Tenant under this Lease, Landlord may enter the Premises and perform such obligation without liability to Tenant for any loss or damage to Tenant, its property, its invitees or the property of its invitees thereby incurred, and Tenant will reimburse Landlord for the costs incurred by Landlord in connection with such performance, plus an additional twenty percent (20%) of such cost to compensate Landlord for its overhead and supervision costs, within ten (10) days of receipt of Landlord's invoice therefor.

4.10     Additional Rental.  All amounts payable by Tenant to Landlord under this Lease in addition to Base Rental shall be deemed to be additional rental and will be payable and recoverable as rent in the manner prescribed in this Lease.  As used herein, the terms "rental" and/or "rent" shall mean and include, without limitation, the Base Rental, the Tenant's Pro Rata Share of Building Operating Costs, the Premises' Pro Rata Share of Energy Costs, and any other additional rental, charges, reimbursable costs and other sums that Tenant may owe to Landlord under the terms and conditions of this Lease from time to time or at any time.

ARTICLE VCONSTRUCTION

In the event any construction of tenant improvements is necessary for the Premises prior to Commencement Date, such construction will be accomplished and the cost of such construction will be borne by Landlord and/or Tenant in accordance with the Leasehold Improvement Agreement (if any) attached to this Lease, and except as expressly provided therein, Tenant acknowledges that Landlord has not undertaken and shall not be required to perform any modification, alteration or improvement to the Premises nor to provide any allowance or consideration in respect thereto.

ARTICLE VI     SERVICES AND UTILITIES

6.1     Services by Landlord.  Landlord agrees to furnish the following services during the term of this Lease:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

Landlord, Landlord's cleaning contractor and such cleaning contractor's employees will have access to the Premises after 5:30 p.m. and before 8:00 a.m. and will have the right to use, without charge therefor, all light, power and water in the Premises reasonably required to clean the Premises as required under this Lease.  Landlord will be deemed to have observed and performed the terms and conditions to be performed by Landlord under this Lease, including those relating to the provision of utilities and services, if in so doing Landlord acts in accordance with a directive, policy or request of any governmental or quasi-governmental authority.

6.2     Tenant's Obligations.  Tenant will pay, prior to delinquency, charges for all materials and services not expressly the obligation of Landlord that are furnished to or used on or about the Premises during the Term of this Lease.

6.3     Additional Services.

6.3.1

6.3.2

6.3.3

6.4     Interruption.  Landlord reserves the right, without any liability to Tenant and without affecting Tenant's covenants and obligations hereunder, to stop or interrupt or reduce any of the services listed in Section 6.1 and/or Section 6.3 or to stop or interrupt or reduce any other services required of Landlord under this Lease, whenever and for so long as may be necessary, by reason of (i) the making of repairs or changes which Landlord is required or is permitted by this Lease or by law to make or in good faith deems necessary or (ii) any other cause beyond Landlord's control.  Landlord does not warrant that the services provided for in Section 6.1 and/or Section 6.3 or elsewhere in this Lease will be free from interruption or stoppage and no such interruption or stoppage will in any manner relieve Tenant of any of Tenant's obligations under this Lease except as expressly provided in this Lease.  FAILURE TO ANY EXTENT TO MAKE AVAILABLE, OR ANY SLOW-DOWN, STOPPAGE OR INTERRUPTION OF ANY SERVICES DESCRIBED IN THIS ARTICLE VI RESULTING FROM ANY CAUSE WHATSOEVER (OTHER THAN LANDLORD'S GROSS NEGLIGENCE OR WILLFUL MISCONDUCT) SHALL NOT RENDER LANDLORD LIABLE IN ANY RESPECT FOR DAMAGES, NOR BE CONSTRUED AS AN EVICTION OF TENANT (ACTUAL OR CONSTRUCTIVE) NOR RELIEVE TENANT FROM FULFILLMENT OF ANY COVENANT OR AGREEMENT HEREOF.

ARTICLE VII USE AND OCCUPANCY

7.1     Quiet Enjoyment.  During the Term of this Lease, Landlord agrees to warrant and defend Tenant's rights under this Lease to enjoy possession of the Premises against any party claiming by, through or under Landlord, subject to the terms of this Lease and any ground lease, mortgage or deed of trust which is now or hereafter placed against the Building or Property, so long as Tenant is not in default under this Lease.  This covenant will be construed as a covenant running with the land, and is not, nor will this covenant be construed as, a personal covenant of Landlord, except to the extent of Landlord's interest in this Lease and only for so long as such interest continues.  Thereafter this covenant will be binding only upon subsequent successors in interest of Landlord's interest in this Lease, to the extent of such successors' respective interests, as and when they will acquire the same, and for so long as such successors will retain such interest.

7.2     Tenant's Use.  Tenant agrees that the Premises will be used and occupied by Tenant only for those uses permitted by Section 1.10 of this Lease.

7.3     Rules and Regulations.  Tenant will comply fully with all requirements of the "Rules and Regulations" (herein so called) of the Building which are contained in Exhibit "D" attached hereto; provided that, in the event of any conflict between the provisions of this Lease and the Rules and Regulations, the provisions of this Lease shall control.  Landlord will at all times have the right to change such Rules and Regulations or to promulgate other Rules and Regulations in such manner as may be deemed advisable for the safety, care, or cleanliness of the Building and Common Areas, and for the preservation of good order therein, all of which Rules and Regulations, changes and amendments will be forwarded to Tenant in writing and will be carried out and observed by Tenant.  Tenant will also be responsible for the compliance with such Rules and Regulations by the agents, employees, licensees and invitees of Tenant.  Nothing contained in this Lease shall be construed to impose upon Landlord any duty or obligation to enforce the Rules and Regulations against any other tenant or any employees or agents of any other tenant, and Landlord will not be liable to Tenant for violation of the Rules and Regulations by any other tenant or such other tenant's employees, agents, invitees or licensees.

7.4     Additional Covenants of Tenant.

7.4.1

7.4.2

7.5     Entry by Landlord.  Landlord will have the right at any time to enter the Premises for the purpose of examining and inspecting the Premises and to make such repairs, additions or alterations to the Premises or other portions of the Building as Landlord may deem necessary or proper for the safety, improvement or preservation of the Premises or of the Building, so long as same do not unreasonably interfere with Tenant's use and occupancy of the Premises.  During the period of eighteen (18) months prior to the expiration date of this Lease, Landlord and Landlord's agent may show the Premises to prospective tenants.

7.6     Building Name.  Landlord reserves and retains the right at any time and from time to time to change the name by which the Building is designated.

ARTICLE VIIIREPAIRS, ALTERATIONS

8.1     Repairs and Maintenance.  Landlord will repair and maintain the structural components of the Building, the basic Building core, the basic Building facilities systems which pass through the Premises and the Common Areas.  Landlord will not be responsible for maintenance or repair of improvements made by or at the request of Tenant that are not Building Standard (which term, as used herein and herein so called, shall mean the level or type of service or equipment standard in the Building or the type, brand or quality of materials Landlord designates from time to time to be the minimum or exclusive type, brand or quality to be used in the Building), it being hereby agreed that Tenant shall be solely responsible for the cost of maintenance or repair of any non-Building Standard improvements made by or at the request of Tenant.  Tenant will, at Tenant's expense, take good care of and maintain the Premises in good order, condition and repair, except as provided in the preceding sentence.  Tenant will be liable for any damage to the Premises or to any other part of the Building which arises out of any act, omission, misuse or neglect of Tenant or any of Tenant's subtenant's, employees, agents, contractors or invitees or any other person entering upon the Premises.  Tenant, at Tenant's expense, will be responsible for replacement of any and all light bulbs and fluorescent tubes in the Premises other than the Building standard fluorescent tubes and ballasts, and Tenant shall additionally be responsible for promptly replacing all scratched, damaged or broken doors and glass in and about the Premises and will be responsible for all repairs, maintenance and replacement of wall and floor coverings in the Premises to the extent that the same are damaged beyond reasonable and customary wear and tear (except to the extent that such damage or need for repair is caused by the act, omission, misuse or neglect of Landlord or any of Landlord's employees, agents, contractors or invitees and such damage or repair item is not covered by, or is not required hereunder to be covered by, insurance of Tenant or subject to the provisions of Section 9.5 hereof).  Any repairs in or to the Premises or the Building for which Tenant is responsible will, only after Landlord's receipt of written request therefor, be performed by Landlord at Tenant's expense (including Landlord's supervision fee under Section 4.9 hereof).

8.2     Surrender of Premises.  Upon termination or earlier expiration of this Lease, or upon the exercise by Landlord of Landlord's right to re-enter the Premises without terminating this Lease, Tenant will deliver the Premises to Landlord in a condition comparable to the condition existing on the Commencement Date, ordinary wear, tear and obsolescence only excepted.  Tenant will deliver to Landlord all keys for the Premises and combinations to safes located in the Premises.  Tenant will, at Landlord's option, remove, or cause to be removed, from the Premises or the Building, at Tenant's expense and as of Expiration Date or earlier termination of this Lease, all of Tenant's signs, notices, displays, millwork, movable trade or business fixtures, or, subject to Subsection 8.3 of this Lease, any non-Building standard tenant improvements placed in the Premises or the Building.  Tenant agrees to repair, at Tenant's expense, any damage to the Premises or the Building resulting from the removal of any articles of personal property, movable business or trade fixtures, machinery, equipment, furniture, movable partitions or non-Building standard tenant improvements, including without limitation, repairing the floor and patching and painting the walls where reasonably required by Landlord.  Tenant's obligations under this Section 8.2 will survive the expiration or earlier termination of this Lease.  If Tenant fails to remove any item of property permitted or required to be removed at the expiration or earlier termination of the Term, Landlord, may, at Landlord's option, (a) remove such property from the Premises at the expense of Tenant and sell or dispose of same in such manner as Landlord deems advisable, or (b) place such property in storage at the expense of Tenant.  Any property of Tenant remaining in the Premises ten (10) days after the Expiration Date or earlier termination of this Lease will be deemed to have been abandoned by Tenant, and in such case such items may be retained by Landlord as Landlord's property or disposed of by Landlord without accountability to Tenant, in such manner as Landlord determines, at Tenant's expense.

8.3     Alterations and Additions by Tenant.

8.3.1

8.3.2

8.3.3

8.3.4

8.4     Mechanics and Materialmen's Liens.  Tenant will not permit to be placed upon the Premises, the Building, the Common Areas or the Property during the Term, any mechanics' or materialmen's lien or liens caused by or resulting from any work performed, materials furnished or obligations incurred by or at the request of Tenant, and in the case of the filing of any such lien, Tenant promptly will pay or bond around the same so as to obtain the discharge and release thereof.  If any such lien or liens are not so discharged and released within twenty (20) days after written notice thereof from Landlord to Tenant (or such shorter period as may be reasonably required by Landlord in the event that a sale or refinancing of the Building may then be pending), Landlord will have the right and privilege, at Landlord's option, of paying the same or any portion thereof without inquiry as to the validity thereof, and any amounts so paid, including expenses and interest, will be additional rental hereunder due from Tenant to Landlord and will be repaid to Landlord within ten (10) days after delivery to Tenant of an invoice therefor.

8.5     Control of Building and Common Areas.  The Building and Common Areas will be at all times under the exclusive control, management and operation of the Landlord.  Landlord hereby reserves the right from time to time (i) to alter or redecorate the Building (including the Common Areas) or construct additional facilities adjoining or proximate to the Building; (ii) to close temporarily doors, entry ways, public spaces and corridors and to interrupt or suspend temporarily Building services and facilities in order to perform any redecorating or alteration or in order to prevent the public from acquiring prescriptive rights in the Common Areas; and (iii) to change the name of the Building.

ARTICLE IX INSURANCE

9.1     Tenant's Insurance.

9.1.1

9.1.2

9.1.3

9.2     Indemnity.

9.2.1

9.2.2

9.3     Landlord's Insurance.  Landlord agrees to maintain throughout the Term a policy or policies of insurance covering loss of or damage to the Building in an amount or percentage of replacement value as Landlord deems reasonable in relation to the age, location, type of construction and physical condition of the Building and the availability of such insurance at reasonable rates; provided, further, that such policy or policies of insurance shall provide coverage only against such perils or damage as Landlord reasonably deems necessary.  The premium(s) for such policy or policies will be included as part of the Building Operating Costs.  Payment for losses covered under such policy or policies will be made solely to Landlord or to the Landlord's mortgagees as their interests may appear.  Landlord shall have the right to self-insure the obligations set forth in this paragraph.

9.4     Waiver of Subrogation.  EACH PARTY AGREES TO NOTIFY SUCH PARTY'S PROPERTY INSURANCE CARRIER OF THE EXISTENCE OF THIS WAIVER OF SUBROGATION PROVISION AND TO HAVE INCLUDED IN EACH OF THE PROPERTY INSURANCE POLICIES REQUIRED TO BE CARRIED BY SUCH PARTY UNDER THIS LEASE A WAIVER OF THE INSURER'S RIGHT OF SUBROGATION AGAINST THE OTHER PARTY DURING THE TERM OF THIS LEASE OR, IF SUCH WAIVER SHOULD BE UNOBTAINABLE OR UNENFORCEABLE, (I) AN EXPRESS AGREEMENT THAT SUCH POLICY WILL NOT BE INVALIDATED IF THE INSURED WAIVES THE RIGHT OF RECOVERY AGAINST ANY PARTY RESPONSIBLE FOR A CASUALTY COVERED BY THE POLICY BEFORE THE CASUALTY OR (II) ANY OTHER FORM OF PERMISSION FOR THE RELEASE OF THE OTHER PARTY.  IF SUCH WAIVER, AGREEMENT OR PERMISSION IS NOT, OR CEASES TO BE, OBTAINABLE FROM EITHER PARTY'S THEN CURRENT INSURANCE COMPANY, THE INSURED PARTY WILL NOTIFY THE OTHER PARTY PROMPTLY AFTER LEARNING THEREOF, AND SHALL USE SUCH PARTY'S BEST EFFORTS TO OBTAIN SAME FROM ANOTHER ACCEPTABLE INSURANCE COMPANY.  Unless the waivers contemplated by this sentence are not obtainable for the reasons described in this Section 9.4, Landlord waives any and all rights of recovery, claims, actions or causes of action against Tenant and the Tenant-Related Parties, and Tenant waives any and all rights of recovery, claims, actions or causes of action against Landlord and the Landlord-Related Parties, for any loss or damage to property which is covered or would have been covered under the insurance policies required under this Lease.  The foregoing release will not apply to losses or damages in excess of actual or required policy limits (whichever is greater) nor to any deductible (up to a maximum of $10,000) applicable under any policy obtained by the waiving party.  The failure of either party (the "Defaulting Party") to take out or maintain any insurance policy required under this Lease will be a defense to any claim asserted by the Defaulting Party against the other party hereto by reason of any loss sustained by the Defaulting Party that would have been covered by any such required policy.  The waivers set forth in the immediately preceding sentence will be in addition to, and not in substitution for, any other waivers, indemnities or exclusions set forth in this Lease.

9.5     Control of Proceeds.  Any insurance which may be carried by Landlord or Tenant against loss or damage to the Building or to the Premises will be for the sole benefit of the party carrying such insurance and under such party's sole control.

ARTICLE X     ASSIGNMENT AND SUBLETTING

10.1     Consent.  Tenant will not assign this Lease or sublet all or any portion of the Premises without the prior written consent of the Landlord.  If consent to any assignment or subletting is given by Landlord, such consent will not relieve the Tenant or any guarantor of this Lease from any obligation or liability under this Lease.  If Landlord consents to such assignment or sublease, Tenant shall furnish Landlord with an executed copy of such assignment or sublease instrument at the time such is executed, and Tenant shall in any event pay and reimburse to Landlord all reasonable fees and expenses (including reasonable attorneys' fees) incurred by Landlord in connection with the processing of any such request for consent.  Tenant must, in the case of any such assignment or sublease, cause the assignee or sublessee to expressly assume and agree to perform all of the covenants, duties and obligations of Tenant under this Lease, but Tenant will nevertheless remain directly and primarily liable for the performance of all such covenants, duties and obligations.  If this Lease is assigned or any part of the Premises is occupied by any person other than the Tenant without the consent of Landlord, the Landlord may nevertheless enforce the provisions of this Lease against, and collect Base Rental and additional rent from, the assignee or occupant, and apply the net amount collected to the Base Rental and other amounts payable under this Lease, but, in no event will such enforcement or collection be construed as a waiver of this covenant or release of Tenant or Guarantor on this Lease.  The consent by Landlord to any assignment or subletting shall not relieve Tenant, or any permitted sublessee or assignee, from obtaining the express consent of Landlord to any further assignment or subletting.  Any attempt to effect an assignment or sublease without the required consent of Landlord will be void and of no effect.

10.2     Landlord's Options.  If the Tenant desires to assign this Lease or sublet all or part of the Premises, Tenant will notify Landlord in writing at least sixty (60) days in advance of the date on which Tenant desires to make such assignment or enter into such sublease, and Tenant will provide Landlord with a copy of the proposed assignment or sublease, and sufficient information concerning the proposed sublessee or assignee to allow Landlord to make informed judgments as to the financial condition, reputation, operations and general desirability of the proposed assignee or subtenant(s).  Within thirty (30) days after Landlord's receipt of Tenant's proposed assignment or sublease and all required information concerning the proposed subtenant(s) or assignee, Landlord will have the option to:

(i)

(ii)

(iii)

(iv)

10.3     Definition of Assignment.  The use of the words "assignment", "subletting", "assign", or "assigned" or "sublet" in this Article X will include (i) the pledging, mortgaging or encumbering of Tenant's interest in this Lease, or the Premises or any part thereof, (ii) the total or partial occupation of all or any part of the Premises by any person, firm, partnership, or corporation, to any groups of persons, firms, partnerships, or corporations, or any combination thereof, other than Tenant, (iii) an assignment or transfer by operation of law, and (iv) with respect to a corporation, partnership, or other business entity, a transfer or issue by sale, assignment, bequest, inheritance, operation of law, or other disposition, or by subscription, of any part or all of the corporate shares of or general partnership interest or other interests in the Tenant, so as to result in any change in the present effective voting control of the Tenant by the party or parties holding such voting control on the date of this Lease.  Upon the request of Landlord, Tenant will make available to the Landlord or to Landlord's representatives, for inspection, all books and records of the Tenant necessary to ascertain whether there has, in effect, been a change in control of Tenant.  Item (iv) of this Section 10.3 will not apply to a corporation whose shares are traded on a nationally recognized stock exchange.  Notwithstanding anything to the contrary set forth in this Article X, however, Tenant shall have the right to assign the Lease or sublet the Premises or any portion thereof, without Landlord's consent (which following-described assignment or subletting shall be herein referred to as a "Permitted Transfer"), to:  (i) any corporation or other legal entity which controls, is controlled by or is under common control with Tenant, so long as Tenant remains liable in such event for all obligations of Tenant under this Lease; or (ii) any corporation or other legal entity which acquires all or substantially all of the assets of Tenant's business as an ongoing concern, or into or with which Tenant is merged or consolidated in accordance with all applicable laws governing such mergers and consolidations, so long as such acquirer's and/or survivor's (as the case may be) tangible net worth after such acquisition, merger or consolidation is not less than the greater of Tenant's tangible net worth as of the date immediately preceding the date of such acquisition, merger or consolidation or Tenant's tangible net worth as of the date immediately preceding the Effective Date of this Lease; provided, that any such permitted transferee under the circumstances described in the immediately preceding clauses (i) and (ii) must first assume, in full, all of the obligations of Tenant set forth in this Lease, and Tenant shall remain fully liable in any such event for all of its obligations under this Lease; provided, further, that Tenant shall in any event notify Landlord of any such Permitted Transfer, as provided in this sentence above, in writing not less than ten (10) business days in advance of the date of consummation of any such Permitted Transfer (which notice shall be accompanied by evidence, in form and content reasonably satisfactory to Landlord, of the tangible net worth of such permitted transferee, where applicable, and of the express assumption by such permitted transferee of Tenant's obligations under this Lease as provided above).  It is agreed that, for purposes hereof, the term "tangible net worth" means the excess of total assets over total liabilities, in each case determined in accordance with generally acceptable accounting principles, consistently applied, excluding from the determination of total assets all assets which can be classified as intangible assets under generally acceptable accounting principles (including, without limitation, goodwill, licenses, patents, trademarks, trade names, copyrights and franchises).

10.4     Bankruptcy, Insolvency.  If this Lease is assigned to any person or entity pursuant to  the provisions of the Federal Bankruptcy Code, 11 U.S.C. §
 101, et seq., as subsequently amended (the "Bankruptcy Code"), any and all monies or other considerations payable or otherwise to be delivered in connection with such assignment will be paid or delivered to Landlord, will be and remain the exclusive property of Landlord, and will not constitute property of Tenant within the meaning of the Bankruptcy Code.  Any and all monies or other considerations constituting Landlord's property under the preceding sentence not paid or delivered to Landlord will be held in trust for the benefit of Landlord and be promptly paid to or turned over to Landlord.  For purposes of Section 365(f)(2) of the Bankruptcy Code "adequate assurances of future performance" will include, but not be limited to, a Security Deposit, net worth, and creditworthiness equalto that of Tenant on the date of this Lease.  Any person or entity to which this Lease is assigned pursuant to the provisions of the Bankruptcy Code, will be deemed without further act or deed to have assumed all of the obligations arising under this Lease on and after the date of such assignment.  Any such assignee will upon demand execute and deliver to Landlord an instrument confirming such assumption.

10.5     Landlord's Assignment.  Landlord shall have the right to sell, convey, transfer, assign, pledge, mortgage or encumber, in whole or in part, all and every feature of Landlord's rights and obligations hereunder and in the Building and the Property.  Upon the occurrence of any sale, conveyance, transfer or assignment, such successor in interest shall be deemed to have assumed Landlord's rights and obligations under this Lease, Landlord will be released from all obligations hereunder, and Tenant agrees to look solely to such successor in interest of Landlord for the performance of such obligations.

ARTICLE XI     FIRE AND OTHER CASUALTY

11.1     Total Destruction.  In the event that (i) the Building is totally destroyed by fire, tornado or other casualty, or (ii) the Premises or the Building is so damaged that rebuilding or repair of such damage cannot be completed within two hundred seventy (270) days after the date of such damage, as set forth in the estimate to be obtained as provided below, then, in either such event, either Landlord or Tenant may terminate this Lease, in which event rent payable hereunder will be abated during the unexpired portion of the Term of this Lease effective from the date of such damage.  If Tenant wishes to terminate this Lease, Tenant must do so by notifying Landlord in writing of such election within thirty (30) days after the date of Tenant's receipt of the below-described estimate.  In determining whether rebuilding or repair can be completed within two hundred seventy (270) days, a statement of the estimated time for rebuilding or repair certified to by Landlord's architect will be conclusive, and Landlord shall deliver a copy of such estimate to Tenant promptly following receipt thereof.

11.2     Partial Destruction.  In the event the Building or the Premises is damaged by fire, tornado or other casualty, but only to such extent that rebuilding or repairs can be completed within two hundred ten (210) days after the date of such damage, or if the damage is more serious but neither Landlord nor Tenant elects to terminate this Lease, Landlord will, following Landlord's receipt of insurance proceeds with respect to such damage in an amount sufficient (in Landlord's discretion) to pay the costs of the following rebuilding or repair, commence to rebuild or repair the Building and/or the Premises and proceed with reasonable diligence to restore the Building and/or the Premises to substantially the same condition in which the same existed immediately prior to the happening of the casualty; provided, however, that (i) Landlord will not be required to rebuild, repair or replace any part of the furniture, equipment, fixtures and leasehold improvements which have been placed by Tenant, or on behalf of Tenant, on or within the Premises, nor any Alterations which Tenant is required to insure pursuant to Section 9.1.2 above, (ii) Landlord shall not be required to rebuild or repair any damage to the extent that such damage is not insured under the insurance policy or policies required to be carried by Landlord pursuant to Section 9.3 above, nor shall Landlord be required to spend more than the amount of insurance proceeds actually received, and (iii) in no event shall Landlord be required to rebuild or repair the Premises or Building to other than substantially the same condition each was in immediately prior to the happening of the fire or other casualty.  In the event the repairs and rebuilding of the Building or the Premises (as the case may be) have not been substantially completed within two hundred forty (240) days following the occurrence of the subject casualty, and provided that the statement of the estimated time for rebuilding or repair delivered by Landlord indicated the repairs could be effectuated within two hundred ten (210) days, Tenant may elect to terminate this Lease by providing Landlord with written notice of termination following the expiration of such two hundred forty (240) day period so long as notice is delivered to Landlord prior to Landlord's substantial completion of such rebuilding or repairs; provided, that for purposes of this paragraph, "substantial completion" of the repairs or rebuilding shall be deemed to have occurred when (a) the architect responsible for preparing the appropriate plans and construction drawings for such repair or rebuilding has certified in writing that the repairs and/or rebuilding have been completed in accordance with the agreed plans and that the repairs and rebuilding are in good and satisfactory condition, subject only to completion of minor punch list items which do not materially interfere with Tenant's use of the Premises as contemplated and permitted hereby, and (b) if applicable, a Certificate of Occupancy for the applicable portion of the Premises so repaired or rebuilt has been reissued by the City of Frisco, Texas, and obtained by Landlord.  Following any such rebuilding or repair by Landlord, Tenant shall rebuild and repair Tenant's insured Alterations, fixtures and improvements in the Premises.  Landlord will allow Tenant an equitable abatement of rent during the time the Premises are unfit for occupancy due to such damage or casualty.  In the event any mortgagee under a deed of trust, security agreement or mortgage on the Building requires that the insurance proceeds be applied to the debt secured thereby, Landlord will have no obligation to rebuild or is unable to by virtue of any such requirement or by virtue of any restrictions, prohibitions or requirements of law, and if Landlord elects not to rebuild or is unable to rebuild by virtue of any such requirement or by virtue of any restrictions, prohibitions or requirements of law, this Lease will terminate upon notice of such election given by Landlord to Tenant.  Except as specifically provided above, there will be no reduction of  rental.

11.3      No Liability.  Landlord shall have no liability to Tenant by reason of any injury to or interference with Tenant's business or property arising from fire or other casualty, howsoever caused, or from the making of any repairs resulting therefrom if any, in or to any portion of the Building of the Premises.  Moreover, Landlord shall not be responsible for, and Tenant releases and discharges Landlord from, and Tenant further waives any right of recovery from Landlord for, any loss from business interruption or loss of use of the Premises suffered by Tenant in connection with Tenant's use or occupancy of the Premises, whether by virtue of fire, casualty or otherwise, EVEN IF SUCH LOSS IS CAUSED SOLELY OR IN PART BY THE NEGLIGENCE OF LANDLORD OR ANY LANDLORD-RELATED PARTIES.

ARTICLE XIIEMINENT DOMAIN

12.1     Total Taking.  If the whole or substantially the whole of the Building or of the Property is condemned or taken in any manner including a voluntary conveyance by Landlord in lieu of condemnation, during the Term of this Lease by any governmental or quasi-governmental agency having the power of eminent domain, this Lease will terminate as of the date of taking of possession for such purpose.  If less than the whole or substantially the whole of the Building or the Premises is taken but the portion of the Premise taken is so great that Tenant cannot continue to conduct business in a manner comparable to the manner in which Tenant conducted Tenant's business prior to the taking, Tenant may elect to terminate this Lease by delivering written notice thereof to Landlord and thereupon this Lease will terminate upon the date of the taking.

12.2     Partial Taking.  If less than the whole or substantially the whole of the Building or the Premises is taken but the portion of the Building or the Property taken is such that the taking materially adversely affects the value of the Property or the Building, Landlord may elect to terminate this Lease by delivering written notice thereof to Tenant and thereupon this Lease will terminate upon the date of the taking.  Any election to terminate this Lease pursuant to the preceding sentences must be exercised within sixty (60) days after the date of taking.  Upon any condemnation of less than the whole of the Building or the Premises which does not result in the termination of this Lease as described above, this Lease will nevertheless terminate as to the portion of the Premises so taken and continue in full force and effect as to the remaining portion of the Premises and the rent payable hereunder will equitably abate with respect to the portion of the Premises so taken (with no effect on the rental payable for the remainder of the Premises).

12.3     Award.  Landlord shall be entitled to receive the entire award in any condemnation proceeding for a permanent taking which affects the Building or the Premises described in Sections 12.1 or Section 12.2 above, including without limitation, any award for the value of the unexpired portion of the Term of this Lease.  Tenant hereby expressly assigns to Landlord all of Tenant's right, title and interest in and to any such award or payment for a permanent taking.  No temporary taking of the Premises, and/or Tenant's rights therein, by a public or quasi-public agency under the right of eminent domain will terminate this Lease or give Tenant any right to any abatement of Base Rental or Additional Rent under this Lease.  Any award made to Tenant by reason of any temporary taking will belong entirely to Tenant and Landlord will not be entitled to share in such award.

ARTICLE XIIIDEFAULT BY TENANT

13.1     Events of Default.  The occurrence of any of the following will constitute a default by Tenant under this Lease:

13.1.1

13.1.2

13.1.3

13.1.4

13.1.5

13.1.6

13.1.7

As used in this Section 13.1, the term "Tenant" includes any guarantor of Tenant's obligations under this Lease.

13.2     Remedies.  Upon the occurrence of any event of default specified in Section 13.1.1, Section 13.1.2, Section 13.1.6 or Section 13.1.7, Landlord will have the option to pursue any one or more of the following remedies without any further notice or demand whatsoever.  Upon the occurrence of any other event of default under Section 13.1, this Lease will automatically terminate without action on the part of Landlord and Section 13.2.1 hereof will control.

13.2.1

(a)

(b)

(c)

(d)

(1)

(2)

(3)

13.2.2

13.2.3

13.2.4

13.3     Landlord's Damages.  The loss or damage suffered by Landlord by reason of termination of this Lease or the deficiency from any reletting as provided for above will include the expense of repossession and any repairs or remodeling undertaken by Landlord following repossession, brokerage fees resulting from reletting the Premises, and all damages Landlord may incur by reason of such default, including without limitation, the cost of recovering the Premises.

13.4     Remedies Cumulative.  The specific remedies to which Landlord may resort hereunder are cumulative and are not intended to be exclusive of any other remedies to which Landlord may lawfully be entitled at any time and Landlord may invoke any remedy allowed at law or in equity as if specific remedies were not provided for herein.  Pursuit of any of the foregoing remedies will not preclude pursuit of any of the other remedies herein provided or any other remedies provided by law or equity, nor will pursuit of any remedy herein provided constitute a forfeiture or waiver of any rental due to Landlord hereunder or of any damages accruing to Landlord by reason of the violation of any of the terms, provisions and covenants herein contained.

13.5     Joint and Several Liability.  If more than one party is defined as Tenant in this Lease, all of the duties, obligations, promises, covenants and agreements contained in this Lease to be paid and performed by Tenant will be the joint and several obligation of all parties defined as Tenant.  Each party defined as Tenant agrees that Landlord in Landlord's sole discretion may (i) institute or bring suit against each such party, jointly and severally, or against any one or more of such parties, (ii) compromise or settle with any one or more of such parties for such consideration as Landlord may deem proper, and (iii) release one or more of such parties from liability hereunder; and each agrees that no such action by Landlord will impair or affect Landlord's right to collect costs, expenses, losses or damages incurred or suffered by Landlord from the other parties defined as Tenant, or any of such parties, not so sued, compromised, settled with or released.

13.6     Landlord's Lien; Security Interest.  Landlord hereby waives any right to a contractual or statutory lien in any property of Tenant now or hereafter placed in or upon the Premises.

13.7     Attorneys' Fees.  If Landlord or Tenant employs an attorney to assert or defend any action arising out of the breach of any term, covenant or provision of this Lease, or to bring legal action for the unlawful detainer of the Premises, the prevailing party in such action will be entitled to recover from the non-prevailing party therein all attorneys' fees and costs of suit incurred by such prevailing party in connection therewith.  For purposes of this Section 13.7, a party will be considered to be the "prevailing party" if (i) such party initiated the litigation and substantially obtained the relief which it sought (whether by judgment, voluntary agreement or action of the other party, trial or alternative dispute resolution process), (ii) such party did not initiate the litigation and either (A) received a judgment in its favor, or (B) did not receive judgment in its favor, but the party receiving the judgment did not substantially obtain the relief which it sought, or (iii) the other party to the litigation withdrew its claim or action without having substantially received the relief which it was seeking.

13.8     Waivers.  Forbearance by Landlord to enforce one or more of the remedies herein provided upon an event of default will not be deemed or construed to constitute a waiver of any other violation or default.  Landlord's acceptance of rental following an event of default will not be construed as a waiver by Landlord of such event of default, nor be deemed or construed to constitute a waiver of any other violation or breach of any of the terms, provisions and covenants herein contained.  TENANT HEREBY WAIVES AND SURRENDERS, FOR ITSELF AND ALL PERSONS OR ENTITIES CLAIMING BY, THROUGH AND UNDER TENANT, ANY RIGHTS, PRIVILEGES AND LIENS SET OUT UNDER SECTIONS 91.004, 93.002 AND 93.003 OF THE TEXAS PROPERTY CODE (AS AMENDED), AND TENANT EXEMPTS LANDLORD FROM ANY LIABILITY OR DUTY THEREUNDER.  TENANT FURTHER HEREBY WAIVES ALL RIGHTS UNDER THE TEXAS PROPERTY TAX CODE, NOW OR HEREAFTER IN EFFECT, INCLUDING WITHOUT LIMITATION ALL RIGHTS UNDER SECTION 41.413 AND 42.015 THEREOF, GRANTING TO TENANTS OF REAL PROPERTY OR LESSEES OF TANGIBLE PERSONAL PROPERTY THE RIGHT TO PROTEST THE APPRAISED VALUE, OR RECEIVE NOTICE OF ANY REAPPRAISAL, OF ALL OR ANY PORTION OF THE BUILDING AND PROPERTY, IRRESPECTIVE OF WHETHER LANDLORD HAS ELECTED TO PROTEST SUCH APPRAISED VALUE.  LANDLORD AND TENANT FURTHER HEREBY EACH ACKNOWLEDGE AND AGREE THAT THEY ARE KNOWLEDGEABLE AND EXPERIENCED IN COMMERCIAL TRANSACTIONS AND FURTHER HEREBY ACKNOWLEDGE AND AGREE THAT THE PROVISIONS OF THIS LEASE FOR DETERMINING CHARGES, AMOUNTS AND ADDITIONAL RENT PAYABLE BY TENANT (including, without limitation, under Sections 4.2, 4.6, 4.9, 6.2 and 6.3 OF THIS LEASE) ARE COMMERCIALLY REASONABLE AND VALID and, as to each such charge or amount, constitutes a "method by which the charge is to be computed" for purposes of Section 93.012 of the Texas Property Code (as such section now exists or as same may be hereafter amended or succeeded), EVEN THOUGH SUCH METHODS MAY NOT STATE PRECISE MATHEMATICAL FORMULAE FOR DETERMINING SUCH CHARGES; PROVIDED, FURTHER, THAT NOTWITHSTANDING THE FOREGOING, TENANT HEREBY VOLUNTARILY AND KNOWINGLY WAIVES, to the extent permitted by applicable law, ALL RIGHTS AND BENEFITS TO WHICH TENANT MAY BE ENTITLED UNDER SECTION 93.012 OF THE TEXAS PROPERTY CODE, AS SUCH SECTION NOW EXISTS OR AS SAME MAY BE HEREAFTER AMENDED OR SUCCEEDED.

13.9     Landlord's Default.  Landlord shall be in default under this Lease if Landlord fails to perform any of Landlord's obligations hereunder and said failure continues for a period of thirty (30) days after Tenant delivers written notice thereof to Landlord, provided that if such failure cannot reasonably be cured within said 30-day period, Landlord shall not be in default hereunder if the curative action is commenced within said 30-day period and is thereafter diligently pursued until cured.  In no event shall (a) Tenant claim a constructive or actual eviction or that the Premises have become unsuitable hereunder, or (b) a constructive or actual eviction or breach of the implied warranty of suitability be deemed to have occurred under this Lease, prior to the expiration of the notice and cure periods provided under this Section 13.9.  Tenant is granted no contractual right of termination by this Lease except as may be expressly set forth herein, and Tenant is granted no contractual right of offset or deduction with respect to Tenant except to the extent expressly set forth in this Lease.  Moreover, Tenant's remedies for any such default by Landlord shall be limited by the terms of Section 16.4 hereof.  In no event shall Landlord be liable for any punitive, incidental, special or consequential damages arising under or in connection with this Lease, even if Tenant or Landlord has been advised of the possibility of such damages, any claims for such damages being hereby knowingly and voluntarily waived and released by Tenant for all purposes under and in connection with this Lease and the Premises.

ARTICLE XIVSUBORDINATION AND ATTORNMENT

14.1     Subordination.  Tenant hereby subordinates this Lease and all rights of Tenant hereunder to any ground lease, mortgage or deed of trust and all liens created pursuant to future advances thereunder which are now or which may from time to time be placed upon the Premises, the Building, the Property or any part thereof, and any such ground lease, mortgage or deed of trust and all modifications, consolidations, replacements and extensions thereof (all such encumbrances being collectively referred to herein as the "Encumbrances" or individually as an "Encumbrance") will be superior to and have priority over this Lease.  This Section 14.1 is self-operative and no further instrument of subordination is required.  Notwithstanding the foregoing, it is agreed that any holder of a ground lease, lien, mortgage or deed of trust covering all or any part of the Building may at any time elect to have this Lease have priority over its lien, mortgage, deed of trust or ground lease by executing unilaterally an instrument of subordination or placing a clause of such subordination in any pleadings or in its lien, mortgage, deed of trust or ground lease instrument and recording the same.

14.2     Attornment.  Tenant further covenants and agrees that if the lessor of any ground lease acquires title to the Property through termination or assignment of such ground lease or if the holder of any mortgage or deed of trust acquires the Premises by foreclosure or deed in lieu of foreclosure, or if any other party acquires the Premises as a purchaser at any foreclosure sale (any such lessor of any ground lease, holder of any mortgage or deed of trust or purchaser at a foreclosure sale being each hereinafter referred to as the "Purchaser"), Tenant will thereafter, but only at the option of the Purchaser, as evidenced by the written notice of the Purchaser's election given to Tenant within a reasonable time after the Purchaser's acquisition of title, attorn to such Purchaser and remain bound by novation or otherwise to the same effect as if a new and identical lease containing the terms of this Lease between the Purchaser, as Landlord, and Tenant, as tenant, had been entered into for the remainder of the Term of this Lease effective on the date of the Purchaser's acquisition of title.

14.3     Further Documentation.  Tenant agrees to execute any instrument(s) which may be deemed necessary or desirable to effect the subordination of this Lease to each such Encumbrance or to confirm any election to continue this Lease in effect in the event of foreclosure or ground lease termination or assignment, as above provided.  Landlord is hereby irrevocably appointed and authorized as agent and attorney-in-fact (such power to be deemed to be coupled with an interest) of Tenant to execute and deliver all such subordination instruments in the event that Tenant fails to execute and deliver such instruments within five (5) days after notice from landlord requesting the execution thereof.  The Purchaser will not be liable for any act or omission of Landlord, or subject to any offsets or defenses which Tenant might have against Landlord.  If the Purchaser requires any modification(s) of this Lease, Tenant will, at Landlord's request, promptly execute and deliver to Landlord such instruments effecting such modification(s) as the Purchaser requires, provided that such modification(s) do not adversely affect in any material respect any of Tenant's monetary obligations under this Lease.

ARTICLE XVCERTIFICATES

15.1     Estoppel Certificates.  Tenant agrees that upon tender of possession of the Premises and from time to time thereafter, upon not less than ten (10) days' prior written request by Landlord, or any  mortgagee of Landlord or prospective purchaser of the Building or any interest therein, Tenant will execute, acknowledge and deliver to Landlord and for such mortgagee or purchaser a statement certifying that no breach of or default in the Lease by Landlord has occurred and that this Lease has not been modified unless such modifications are stated therein, and certifying to such other factual matters in connection with the Lease and/or Premises as may be reasonably requested by the party requesting such certificate, which estoppel certificate shall be in a form acceptable to Landlord and/or such mortgagee or purchaser.  Any such statement may be relied upon by any prospective transferee or mortgagee of all or any portion of the Building or the Property, or any assignee of any such persons.  If Tenant fails to timely deliver such statement, Tenant shall be deemed to have acknowledged that this Lease is in full force and effect, without modification except as may be represented by Landlord, and that there are no uncured defaults in Landlord's performance.

15.2     Financial Statements.  Landlord will have the right to request financial statements from Tenant for purposes of selling, financing or refinancing the Building.  Tenant shall, within ten (10) days after receipt of a request from Landlord setting forth the purposes for which such financial statement will be used, deliver to Landlord a current financial statement certified by Tenant's chief financial officer to be true and correct and to fairly express Tenant's then current financial condition.  All such financial statements will be received by Landlord in confidence and used only for the purposes set forth in the request, except as may otherwise be required to be disclosed under applicable law.  In addition to the foregoing, if this Lease has been guaranteed, Landlord may request similar financial statement(s) with regard to any such guarantor(s), and Tenant shall, within ten (10) days after receipt of such request from Landlord setting forth the purposes for which such financial statement(s) will be used, deliver or cause to be delivered to Landlord current financial statement(s) for any such guarantor(s) satisfying the conditions set forth above.

ARTICLE XVIINTEREST OF LANDLORD

16.1     Consents.  If Tenant requires Landlord's consent under any provision of this Lease and Landlord fails or refuses to give such consent, Tenant will not be entitled to any damages for any withholding by Landlord of Landlord's consent; it being intended that Tenant's sole remedy will be an action for specific performance or injunction, and that such remedy shall be available only in those cases where Landlord has expressly agreed in this Lease not to unreasonably withhold Landlord's consent or where as a matter of law Landlord may not unreasonably withhold Landlord's consent.

16.2     Force Majeure.  Whenever a period of time is herein prescribed for action to be taken by Landlord or Tenant, Landlord and Tenant will not be liable or responsible for, and there shall be excluded from the computation of any such period of time, any delays due to strikes, riots, acts of God, shortages of labor or materials, war or acts of terrorism or violence, governmental laws, regulations or restrictions or any other causes (other than financial inability) of any kind whatsoever which are beyond the control of Landlord; provided, however, that the provisions of this Section 16.2 will never be construed as allowing an extension of time with respect to Tenant's obligation to pay rent when and as due under this Lease.

16.3     Best Efforts.  Whenever in this Lease or any exhibit hereto there is imposed upon Landlord the obligation to use Landlord's best efforts or reasonable efforts or diligence, Landlord will be required to exert such efforts or diligence only to the extent the same are economically feasible and will not impose upon Landlord extraordinary financial or other burdens.

16.4     Exculpation.  In any action brought by Tenant against Landlord in the event of any default by Landlord hereunder, Tenant will look only to Landlord's interest in the Property and the Building for satisfaction of Tenant's remedies or for the collection of a judgment or other judicial process requiring the payment of money by Landlord, and no other property or assets of Landlord, disclosed or undisclosed, will be subject to levy, execution or other enforcement procedure for the satisfaction of Tenant's remedies under or with respect to this Lease, the relationship of Landlord and Tenant hereunder or Tenant's use and occupancy of the Premises.  As used in this Section 16.4, the term "Landlord" will be deemed to include any (i) partner, (ii) principal (disclosed or undisclosed), (iii) director, officer, or shareholder of any corporation which is Landlord or a partner of Landlord, or (iv) agent, servant or employee of Landlord.

16.5     Sale of Building.  The term "Landlord" will mean only the owner at the time in question of the fee title or a tenant's interest in a ground lease of the Premises.  The obligations contained in this Lease to be performed by Landlord will be binding on Landlord and Landlord's successors and assigns only during their respective periods of ownership.  In the event of a sale of the Building or assignment of this Lease by Landlord, Landlord will have the right to transfer the Security Deposit to Landlord's vendee or assignee, subject to Tenant's rights therein, and Landlord will thereafter be released from any liability to Tenant with respect to the return of the Security Deposit to Tenant.

ARTICLE XVIINOTICES

Each provision of this Lease with reference to the sending, mailing, or delivery of any notice, or with reference to the making of any payment by Tenant to Landlord, will be deemed to be complied with when and if the following steps are taken:

(i)

(ii)

Notices required hereunder to be given by Landlord to Tenant may be given by Landlord or by Landlord's agent or attorney.

ARTICLE XVIIIBROKERS

Landlord and Tenant each represent to the other that they have had no dealings with any broker or agent (other than the Broker named in Section 1.13 hereof, if any) in connection with the negotiation or execution of this Lease.  TENANT HEREBY AGREES TO INDEMNIFY AND HOLD LANDLORD HARMLESS FROM ANY SUCH CLAIMS OR LIABILITY ARISING OR RESULTING FROM ANYONE CLAIMING SUCH A COMMISSION BY, THROUGH OR UNDER TENANT OR BY VIRTUE OF THE ACT OR COMMITMENT OF TENANT.  Landlord covenants and agrees to pay the lease commission(s) due to the Broker named in Section 1.13 hereof, pursuant to one or more written lease commission agreement(s) between Landlord and said Broker, AND LANDLORD HEREBY AGREES TO INDEMNIFY AND HOLD TENANT HARMLESS FROM ANY DAMAGES ARISING OR OTHERWISE CONNECTED WITH LANDLORD'S BREACH OF THE COVENANT SET FORTH IN THIS SENTENCE AND FURTHER AGREES TO INDEMNIFY AND HOLD TENANT HARMLESS FROM ANY OTHER CLAIMS OR LIABILITY ARISING OR RESULTING FROM ANYONE CLAIMING A COMMISSION BY, THROUGH OR UNDER LANDLORD OR BY VIRTUE OF THE ACT OR COMMITMENT OF LANDLORD.

ARTICLE XIXRELOCATION OF TENANT

Landlord reserves the right from time to time, at Landlord's sole cost and expense, and after first giving Tenant at least 60 days' advance written notice ("Landlord's Relocation Notice"), to remove Tenant from the Premises and relocate Tenant to some other space in the Building or the Hall Office Park (the "New Premises") of approximately the same dimensions and size as the Premises.  The New Premises will be finished out and decorated by Landlord, at Landlord's sole cost and expense, so that the New Premises will be comparable in its interior design and decoration to the Premises.  If Tenant elects to install security system devices to the Premises, Landlord must provide comparable security system devices in the "New Premises".  Landlord will also reimburse Tenant for Tenant's reasonable out-of-pocket expenses for moving Tenant's furniture, equipment, supplies and telephone equipment from the Premises to the New Premises.  If Landlord exercises this relocation option, the effective date of the relocation (the "Relocation Effective Date") will be the later of (i) sixty (60) days following the delivery of Landlord's Relocation Notice, and (ii) the date on which Landlord substantially completes the tenant finish work required of Landlord under this Article XIX.  Upon the Relocation Effective Date, Tenant will surrender possession of the Premises and move into the New Premises.  This Lease will continue in full force and effect with no change in the terms, covenants or conditions hereof other than the substitution of the New Premises for the Premises specified in Section 1.2 hereof and such other adjustments as may be required due to any difference between the number of Rentable Square Feet comprising the Premises and the number of Rentable Square Feet comprising the New Premises.  Except as otherwise provided hereinabove, Tenant will not be entitled to any compensation by virtue of any such substitution of premises or for any inconvenience or interference with Tenant's business due to relocation of Tenant, nor shall Tenant be entitled to any abatement or reduction of Base Rental or additional rental under this Lease by reason of such relocation; provided, however, that the Base Rental for the New Premises will be the product of the Base Rental rate per Rentable Square Foot under the Lease at such time multiplied by the number of Rentable Square Feet in the New Premises, and the Tenant's Pro-Rata Share of Building Operating Costs and the Premises' Pro-Rata Share of Energy Costs shall each be subject to adjustment based upon the number of Rentable Square Feet contained in the New Premises.  Tenant agrees to execute and deliver to Landlord, upon request therefor, an amendment confirming the substitution of the New Premises for the initial Premises pursuant to this Article XIX.

ARTICLE XXMISCELLANEOUS

20.1     No Implied Waiver.  No provision of this Lease will be deemed to have been released or waived by Landlord unless such release or waiver is in writing and is signed by Landlord.

20.2     No Recording.  Tenant agrees that Tenant will not record this Lease or a memorandum thereof or a reference thereto without first securing the prior written consent of Landlord, which may be withheld at Landlord's sole discretion.  Any such memorandum shall not be deemed to change or affect any of the obligations or provisions of this Lease.

20.3     Independent Contractor.  It is understood and agreed that in leasing and operating the Premises, Tenant is acting as an independent contractor and is not acting as agent, partner, joint venturer or employee of Landlord, and nothing contained in this Lease shall create any relationship between the parties hereto other than that of Landlord and Tenant.

20.4     Additional Amenities.  Tenant acknowledges that Landlord may make additional amenities available within Hall Office Park, including without limitation access to notary services, discount priced tickets for community activities, availability of a childcare and/or a health club facility, and artwork for view. Tenant acknowledges and agrees that it is not a condition of this Lease that any such amenities, which are not included in the services and utilities referenced in Article VI above, be provided. Tenant further acknowledges and agrees that availability of such amenities may be discontinued without notice at any time, that Landlord may impose or increase a charge in connection with offering such amenities at any time, and that there is no assurance that any artwork that may be located within Hall Office Park will remain at a specific site thereon for any period of time or remain thereon for the term of this Lease. Tenant further acknowledges and agrees that, for any amenities available within Hall Office Park that are provided by a third-party provider, Tenant will not attempt to hold Landlord liable for any action or inaction of such third-party provider, and any attempt to hold Landlord liable therefor shall constitute a breach by Tenant of this Lease.

20.5     Survival.  All of the terms, conditions, covenants, promises and agreements contained  in this Lease (including, without limitation, each indemnity and hold harmless agreement contained herein) will survive the expiration or termination of this Lease with respect to all rights or remedies which have accrued prior to such expiration or termination.

20.6     Severability.  If any term or provision of this Lease is illegal, invalid or unenforceable under present or future laws effective during the Term of this Lease, then and in that event, it is the intention of the parties hereto that the remainder of this Lease will not be affected thereby.  Each covenant, agreement, obligation or other provision of this Lease to be performed by Tenant will be deemed and construed as a separate and independent covenant of Tenant and not as dependent on any other provision of this Lease.

20.7     Amendments.  This Lease may not be altered, changed or amended, except by an instrument in writing signed by both parties hereto.  No custom or practice which may arise between the parties in the administration of the terms, provisions, covenants and conditions hereof will be construed to modify, waive or lessen the rights of Landlord hereunder.

20.8     Binding Effect.  The terms, provisions, covenants and conditions contained in this Lease will apply to, inure to the benefit of, and be binding upon the parties hereto, and upon such parties' respective permitted assigns, successors in interest and legal representatives, except as otherwise herein expressly provided.

20.9     Gender.  Words of any gender used in this Lease shall be held and construed to include any other gender, and words in the singular number shall be held to include the plural unless the context otherwise requires.

20.10     Captions; Section References.  The captions contained in this Lease are for convenience of reference only, and in no way limit or enlarge the terms, provisions, covenants and conditions of this Lease.  Any reference herein to an article, paragraph or section shall mean and refer to an article, paragraph or section of this Lease unless otherwise expressly specified.

20.11     Exhibits.  All exhibits, attachments, annexed or referenced instruments and addenda referred to herein shall be considered a part hereof for all purposes with the same force and effect as if copied verbatim herein.

20.12     Entire Agreement.  This Lease, and the attachments, riders and exhibits thereto constitute the entire agreement between the parties hereto with respect to the subject matter of this Lease.  Tenant expressly acknowledges and agrees that Landlord has not made and is not making, and Tenant, in executing and delivering this Lease, is not relying upon, any warranties, representations, promises or statements, except to the extent that the same are expressly set forth in this Lease or in any other written agreement which may be made between the parties concurrently with the execution and delivery of this Lease and shall expressly refer to this Lease.  All understanding and agreements heretofore had between the parties are merged in this Lease and any other written agreement(s) made concurrently herewith, which alone fully and completely express the agreement of the parties and which are entered into after full investigation. Neither party is relying upon any statement or representation not embodied in this Lease or in other written agreement(s) made concurrently herewith.

20.13     Counterparts.  This Lease may be executed in several counterparts, each of which shall be deemed an original, and all of which shall constitute but one and the same instrument.

20.14     Governing Law and Venue; Miscellaneous.  This Lease and all of the transactions contemplated herein shall be governed by and construed in accordance with the laws of the State of Texas, and Landlord and Tenant both irrevocably agree that their respective agreements and obligations hereunder will be performable in Frisco, Texas, and that venue for any action arising under or relating to the terms of this Lease shall be in Collin County, Texas.  In no event shall any charges permitted under this Lease, to the extent the same are considered to be interest under applicable law, exceed the maximum lawful rate of interest.

20.15     No Reservation; Interpretation.  Submission by Landlord of this instrument to Tenant for examination or signature does not constitute a reservation of or option for lease.  This Lease will be effective as a lease or otherwise only upon execution and delivery by both Landlord and Tenant.  The terms and conditions of this Lease represent the result of negotiations between Landlord and Tenant, each of which were represented and/or had the opportunity to be represented by independent legal counsel and neither of which has acted under compulsion or duress; consequently, the normal rule of construction that any ambiguity be resolved against the drafting party shall not apply to the interpretation of this Lease or of any exhibits, addenda or amendments hereto.

20.16     OFAC Certification.  Tenant hereby certifies that (i) Tenant is not acting, directly or indirectly, for or on behalf of any person, group, entity or nation named by any Executive Order or the United States Treasury Department as a terrorist, "Specifically Designated National and Blocked Person," or other banned or blocked person, entity, nation or transaction pursuant to any law, order, rule or regulation that is enforced or administered by the Office of Foreign Assets Control or its equivalent; and (ii) Tenant is not engaged in this transaction, directly or indirectly on behalf of, or instigating or facilitating this transaction, directly or indirectly on behalf of, any such person, group, entity or nation.  TENANT HEREBY AGREES TO DEFEND, INDEMNIFY AND HOLD HARMLESS LANDLORD AND ALL LANDLORD-RELATED PARTIES FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES, RISKS, LIABILITIES AND EXPENSES (INCLUDING REASONABLE ATTORNEYS' FEES AND COSTS) ARISING FROM OR RELATED TO ANY BREACH OF THE FOREGOING CERTIFICATION.  The indemnification obligations set forth in this Section 20.16 shall survive the expiration or earlier termination of this Lease.

20.17     Substitution of Premises.  If (a) Tenant at any time during the thirty-seven (37) months of the original Term of this Lease shall notify Landlord in writing (herein, the "Expansion Request Notice") that Tenant desires to expand the amount of space leased by Tenant by one hundred percent (100%) or more over the amount of space then being leased by Tenant pursuant to this Lease, which Expansion Request Notice shall set forth the amount of space then required by Tenant for such expansion of the size of the Premises, and (b) Tenant has not, as of the date of such Expansion Request Notice, subleased, assigned or otherwise transferred more than five percent (5%) of the space comprising the original Premises under this Lease, and (c) there is not, as of the date of such Expansion Request Notice, sufficient contiguous space in the Building then reasonably available for lease to Tenant sufficient to satisfy Tenant's expansion needs as described in such Expansion Request Notice, and (d) sufficient contiguous space is then reasonably available in another building in the Hall Office Park to satisfy Tenant's expansion requirements as set forth in such Expansion Request Notice, then, provided that all of the foregoing conditions are satisfied, Landlord shall reasonably endeavor to assist Tenant in relocating to such other available space in the Hall Office Park (which space would then be substituted for the Premises covered by this Lease, pursuant to an amendment to this Lease to be executed by and between Landlord and Tenant in form and content mutually and reasonably satisfactory to each of Landlord and Tenant); provided, that as conditions precedent to any such relocation of Tenant to such other building in the Hall Office Park and the substitution of premises in such other building for the Premises covered by this Lease, (i) the rent for any such substitute premises must be mutually and reasonably agreed upon between Landlord and Tenant in advance in writing, which rent must be at a rate not less than that which is the then current market rate for the particular building in the Hall Office Park in which such substitute premises are located, (ii) all logistical details of such relocation of Tenant, including without limitation details as to the process and allocation of responsibility for constructing or installing alterations or improvements to the substitute premises, the vacating and surrender of the original Premises covered under this Lease, applicable changes to the rights of Tenant under the Parking Agreement attached hereto as Exhibit "F", must all be mutually and reasonably agreed to by Landlord and Tenant in advance in writing, (iii) appropriate modifications to Section 2.2 hereof, with regard to the measurements of the building in which the substitute premises are situated and the measurement of such substitute premises, as well as the resulting change in Tenant's applicable pro-rata shares under this Lease, must be mutually and reasonably agreed to by Landlord and Tenant in advance in writing, (iv) any applicable changes to the Security Deposit as may be reasonably requested by Landlord in connection with any such substitution of premises must be mutually and reasonably agreed to by Landlord and Tenant in advance in writing, (v) Tenant shall pay all moving costs and expenses in connection with such substitution of premises pursuant to this paragraph, and (vi) Tenant and Landlord must mutually and reasonably agree in writing in advance, in form and content reasonably satisfactory to each, upon all other terms and conditions applicable to any such relocation of Tenant to another building in the Hall Office Park and substitution of premises pursuant to this paragraph. Notwithstanding anything to the contrary above, if Landlord does not have any space  available in the Hall Office Park to satisfy Tenant's expansion requirements then Tenant may terminate this lease within sixty (60) days of the notice from Landlord that no such space is available, which Landlord will use their best efforts to respond in a commercially reasonable timeframe, and Tenant shall pay to Landlord the unamortized costs of this Lease transaction which shall include three-fifths (3/5's) of the tenant finishout cost of the Premises which totals $13.20 per rentable square foot, the in-house commissions on the transaction and the value of the free rental all amortized over the term with an interest rate of eight percent (8%) plus the value of two (2) months rental payment.  Tenant shall be responsible for all base rental and other rental charges until the date they vacate and the date of termination of this Lease.



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NOTICE OF INDEMNIFICATION

The parties to this Lease agreement hereby acknowledge and agree that this lease agreement contains certain indemnification provisions.

EXECUTED, made and entered into by Landlord and Tenant effective as of the Effective Date.

| | LANDLORD:                                       
| | ------------------------------------------------
| |                                                 
| | HALL 2601 NETWORK ASSOCIATES, LTD.,             
| | a Texas limited partnership                     
| |                                                 
| | By:                                             
| |                                                 
| |                                                 
| | By:                                             
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| | TENANT:                                         
| |                                                 
| | NEXPLORE TECHNOLOGIES, INC., a Texas Corporation
| |                                                 
| | By:                                             
| | Name:                                           
| | Title: