It helps us know what your interface is, but my spare GT 7600 has an AGP interface, so won't work in your computer.
Shucks! Ah well, if you do need a new video card, Newegg has decent ones on sale for less than $25 all the time. I'll keep my eye out.
How is the computer behaving?
In my PC corner for the winter, gaming, knitting and reading.