I think this is the important info we need about my system if I wrong correct me pls THANKS :)   
System Information 
------------------ 
Time of this report: 12/10/2009, 22:52:33 
       Machine name: FLIGHT-19890402 
   Operating System: Windows XP Professional (5.1, Build 2600) Szervizcsomag 3 (2600.xpsp.080413-2111) 
           Language: Hungarian (Regional Setting: Hungarian) 
System Manufacturer: System manufacturer 
       System Model: System Product Name 
               BIOS: Phoenix - AwardBIOS v6.00PG 
          Processor: AMD Athlon 64 X2 Dual Core Processor 5200+,  MMX,  3DNow (2 CPUs), ~2.7GHz 
             Memory: 2046MB RAM 
          Page File: 348MB used, 3591MB available 
        Windows Dir: C:\WINDOWS 
    DirectX Version: DirectX 9.0c (4.09.0000.0904) 
DX Setup Parameters: Not found 
     DxDiag Version: 5.03.2600.5512 32bit Unicode   
------------ 
DxDiag Notes 
------------ 
  DirectX Files Tab: The file directx.cpl is a debug version, which will run slower than the retail version. 
      Display Tab 1: No problems found. 
      Display Tab 2: No problems found. 
        Sound Tab 1: No problems found. 
          Music Tab: No problems found. 
          Input Tab: No problems found. 
        Network Tab: No problems found.