![](media/image1.wmf)**INVOICE**

  -------------- ------------------------------- --------- -------------- -------------
  **Remit to:**                                                           

                                                                          

  Internet                                                                
  Security                                                                
  Systems, Inc.                                                           

  PO Box 101413                                            Phone          
                                                           404.236.2600   

  Atlanta,                                                 Fax            
  Georgia                                                  404.236.2624   
  30392-1413                                                              

                                                                          

  Federal Tax ID                                                          
  \# 58-2104204                                                           

                                                                          

  **Invoice                                                               
  Number                                                                  
  MR02090172**                                                            

                                                                          

                                                                          

  **Bill to :**  Andrew Bennett                            Date:          February 13,
                                                                          2003

                 REI Systems                                              

                 7620 Little River Turnpike                               

                 Suite 500                                                

                 Annadale, VA 22003                                       

                                                                          

                                                                          
  -------------- ------------------------------- --------- -------------- -------------

+-----+-----------------------------------------+---------+-----------+
| ##  | ## Description                          | ## Uni  | ## Total  |
| Qty |                                         | t Price |           |
+-----+-----------------------------------------+---------+-----------+
| 1   | RealSecure Network Sensor               | \$      | \$        |
|     |                                         | 1       | 1,795.50  |
|     |                                         | ,795.50 |           |
+-----+-----------------------------------------+---------+-----------+
|     |                                         |         |           |
+-----+-----------------------------------------+---------+-----------+
|     |                                         |         |           |
+-----+-----------------------------------------+---------+-----------+
|     |                                         |         |           |
+-----+-----------------------------------------+---------+-----------+
|     |                                         |         |           |
+-----+-----------------------------------------+---------+-----------+
|     |                                         |         |           |
+-----+-----------------------------------------+---------+-----------+
|     |                                         |         |           |
+-----+-----------------------------------------+---------+-----------+
|     |                                         |         |           |
+-----+-----------------------------------------+---------+-----------+
|     | Maintenance Renewal                     |         |           |
+-----+-----------------------------------------+---------+-----------+
|     | **Maintenance Period:**                 |         |           |
+-----+-----------------------------------------+---------+-----------+
|     | 09/20/2002 through 09/20/2003           |         |           |
+-----+-----------------------------------------+---------+-----------+

+------+----+-----------------------------------+--------+------------+
| Pay  |    | N30                               | Su     | \$1,795.50 |
| ment |    |                                   | btotal |            |
| Te   |    |                                   |        |            |
| rms: |    |                                   |        |            |
+------+----+-----------------------------------+--------+------------+
| C    |    |                                   | Sh     |            |
| heck |    |                                   | ipping |            |
| \#   |    |                                   |        |            |
+------+----+-----------------------------------+--------+------------+
| Purc |    |                                   | Tax    | \$ 40.40   |
| hase |    |                                   |        |            |
| O    |    |                                   |        |            |
| rder |    |                                   |        |            |
| \#   |    |                                   |        |            |
+------+----+-----------------------------------+--------+------------+
| Cr   |    |                                   |        |            |
| edit |    |                                   |        |            |
| Card |    |                                   |        |            |
| \#   |    |                                   |        |            |
+------+----+-----------------------------------+--------+------------+
| Exp  |    |                                   | *      | **\$       |
|      |    |                                   | *TOTAL | 1,835.90** |
|      |    |                                   | USD**  |            |
+------+----+-----------------------------------+--------+------------+
|      |    |                                   |        |            |
+------+----+-----------------------------------+--------+------------+
|      |    | ###  Please remit your mainte     |        |            |
|      |    | nance renewal payment directly to |        |            |
+------+----+-----------------------------------+--------+------------+
|      |    | *Internet Security Systems.*      |        |            |
+------+----+-----------------------------------+--------+------------+
|      |    |                                   |        |            |
+------+----+-----------------------------------+--------+------------+
|      |    | *Thank You*                       |        |            |
+------+----+-----------------------------------+--------+------------+