I will be changing my video card soon and would like to know if there is anything specific I need to do before swapping cards, like uninstall a driver or anything.

Currently the system is using a Geforce 4400 and I plan to go to a 7600 or 7800. I'm on a budget and decided on these series of cards based on opinions in the forums. If anyone has had any experience (positive or negative) with one of these Nvidia cards, feel free to post. (See, your opinion does matter.)

The biggest improvement I want from this upgrade is to finally get decent resolutions for my 16:9 Vizio display. The closest I can get so far is 1280x768. The native resolution is 1366x768, so it's kind of stretched. Any advice on how to get that resolution is certainly welcome.