This thread is gonna be locked before it gets started.
If you are looking to buy a new vid card, do some searching around and ask specific questions, ie: I was thinking about getting a 6600GT, what experience have you guys had with it?
Threads like this sometimes break out into flame wars, so do some reading, then post back on a different thread with specific questions.
Use the search feature next time. Your aiming to start a flame war, and you didnt even provide us with any specs as to what you need, ie. AGP or PCI-E.