I am making the upgrade mentioned in the subject and want to know if I need to do anything special with drivers before I switch out the graphics cards. Do I need to get rid of the Nvidia drivers I am using before taking the current card out or will it be OK to just swap it in since I am going to be using the same drivers anyway? If I do need to get rid of the drivers, what is the best way to do so?
Well you can get the 61 series drivers, i personally have them installed on my 5900 card, honestly didn't see it do dickall for me, but i guess Nvidia's ignoring their older cardsnow, and gonna focus on the new geforce 6 lineup.
for the 5900 the new drivers really won't help out much. Ya might want to try to force fp 16 path which will help up shader problems with Far Cry, not sure if thats default with the fx line now with the new drivers. But there is an actual speed decrease about 1% if that is done.