OK! So I got everything figured out. All I need to know is if my computer can run this video card before I buy it:
EVGA 768-P2-N831-AR GeForce 8800GTX 768MB 384-bit GDDR3 PCI Express x16 HDCP Video Card
I have a 650W power supply. If you want to see my other specs, they're in my previous post in this forum.
Thank you!