Nvidia 7300 drivers

I have been trying to install a new graphics card in my computer. I have put it into the computer and when I put the cd in and go on set up it says it can’t locate any drivers that are compatible with my hardware. My computer is XP, the plug in and play monitor is S3 VIA Chrome9 HC IGP. It is starting to wind me up as I have downloaded loads of drivers and nothing seems to work. Please help me.
Thanks.
Sheena.