Star Wars The Old Republic Help?!?

[Zackary]

Hi, I'm currently using a Dell XPS 400 with the following, an I can not play SWTOR. Right before I try to install the game it says it won't work on my version of windows. So I installed it anyway then when I tried to play it I got this message "Error Code: c7 Incompatible system." Is it just impossible to play on this computer or should I just reinstall? Thanks

Operating System
Microsoft Windows XP Professional 32-bit SP2
CPU
Intel Pentium D 820
SmithField 90nm Technology
RAM
3.00 GB Dual-Channel DDR2 @ 266MHz (4-4-4-12)
Motherboard
Dell Inc. 0FJ030 (Microprocessor)
Graphics
DELL 2001FP (1280x1024@60Hz)
256MB ATI Radeon X300/X550/X1050 Series (ATI)
256MB ATI Radeon X300/X550/X1050 Series Secondary (ATI)
CrossFire Disabled