You won't be getting much out of a 9500 GT. Even with CUDA, it just can't do integer operations as quickly as recent CPUs. Take a tour of https://en.bitcoin.it/wiki/Mining_Hardware_Comparison to see what your other options could be.
Thanks. uhm, it appears that my cpu is not in the list. do you happen to know how many mhash/s does the e7500 have? Thanks a lot for your help, I don't really know much about hardware.