P4HT 3.4GHZ
GeFORCE 7600GS 512 MEG AGP video card
Based on your specs I wouldn't even bother to attempt getting it to run. If you're a good tech and have your system uberly optimized and know what you're doing then it might be a good laugh to see the graphics at some kind of pathetic framerate.
Generally, I find that it's not worth running a game like this at super slow frame rates with utterly compromised graphics as in many of these games you'll find that without the graphics the game is rather dull. Immersion is the point when the gameplay is shallow.
You're better off to wait a few months or years after you've upgraded and play it as it was meant to me played.