PC Can't stop jumping

[[G]A.Reznik]

This is known bug that happens when video card is too slow.
And NVIDIA GeForce 8200 is much worse than "nVidia GeForce 7600 256 MB" from minimal system configuration, despite the bigger "numerical" version.

[WTM]

SO thats it, its not gonna work on my computer. There no way to stop her from jumping? WTF!? I mean, I PAID for the game!! Is there no Fix?
Edit:
Oh, and I have the Nvidia GeForce 6150LE with AMD 5000+ 64 x2 dual core.
2nd Edit:
Ive looked it up and wow, its a pretty crappy card. I dont play a lot of games an apparantly my system has not aged gracefully.

Is there any chance its worth my trouble to rig this up to work right? Newer drivers? update from you guys? Cause the game was working acceptably when I ran it, just she wouldnt stop jumping.