This is what you posted for your computer....
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System Information
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Time of this report: 1/10/2009, 17:06:56
       Machine name: 41RAMEY
   Operating System: Windows XP Home Edition (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_gdr.080814-1233)
           Language: English (Regional Setting: English)
System Manufacturer: Dell Computer Corporation
       System Model: Dimension 2400              
               BIOS: Phoenix ROM BIOS PLUS Version 1.10 A05
          Processor: Intel(R) Celeron(R) CPU 2.40GHz
             Memory: 254MB RAM
          Page File: 431MB used, 190MB available
        Windows Dir: C:\WINDOWS
    DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
     DxDiag Version: 5.03.2600.2180 32bit Unicode
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Display Devices
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        Card name: Intel(R) 82845G/GL/GE/PE/GV Graphics Controller
     Manufacturer: Intel Corporation
        Chip type: Intel(R) 82845G Graphics Controller
         DAC type: Internal
       Device Key: Enum\PCI\VEN_8086&DEV_2562&SUBSYS_01601028&REV_01
   Display Memory: 64.0 MB
     Current Mode: 1024 x 768 (32 bit) (70Hz)
          Monitor: Plug and Play Monitor
  Monitor Max Res: 1600,1200
Thats what I mean by weak. I'm not picking on you, what you have is what you have. To make it work you will need to turn down the "eye candy" in the game, as well as getting your computer to run as clean and lean as you can. You barely have enough processes speed, not enough ram, and video that is trying to us virtual memory to get by. The less things you try to stuff through it the better it will run.