One of my computer is a Dell Dimension 8100 with a 4x Version 2.0 AGP. I recently bought a GeForce nVIDIA FX 5700 LE card with 256 MB of DDR. I took out the old one (ATi RADEON 7500 64MBDDR) and put this one in. I booted it up but instead of seeing a display I saw a blank screen and my system hanging there not doing a thing but idling. If anybody think I did something wrong please tell me. My neighbor thinks it's a bad card but I want to make that a last possiblity.

TIA...