Help with new video card

So my friend gave me his ati radeon 9800 pro becuase the old one I had, had a low fps sometimes when playing games. But I am having trouble installing it into the motherboard, for those who have it, I have to connect it to the power supply or something like that? But the cable isn't long enough to reach it is there some sort of extension I can get? Also I have an hp pavillion a320n if that helps. Do ati's run fine with that kind of computer, cause on the mother board there is a chip that says nForce2, I'm really clueless when it comes the hardware parts of computers.

nForce2 is your main board's chip set... it has nothing to do with your video card.

As long as you can plug your video card onto your main board it should work.

Yes you should be able to get an extension cable at computer computer... but if I remember correctly I got one of those cables with my 9800 back in the days. Maybe your friend still has it?

ok thank you that helped me quite a bit, i'll just give him a call and ask him about it and also, before I start up my computer with the new graphics card should I uninstall the nVidia drivers that I have on my computer? or does that not matter?

Generally when you're installing or updating drivers you want to uninstall all previous versions.

Uninstall your old graphics card drivers (whatever they may be), not your Nvidia chipset drivers.