When you uninstall the drivers and restart, a window will pop up saying "new hardware has been found and added" and then a new display will appear with 2 options to search for windows xp drivers and another to search by browsing from a folder or a CD, click Cancel. Then simply install the new driver which you have downloaded.
The fact that games crash on your ATI card isnt a suprise. The suprise is that it seems like for you it happens way too often and for most games rather than few. It is true: ATI do not have as stable drivers as Nvidia do and whenever they fix something with a new driver, a new problem appears with some old game goes that you play, so it's really frustrating but to me it doesnt happen that often. However, after having my Radeon 8500 since the times when Catalyst name wasn't even on ATI's mind, I can assure you i've had at least 10 separate game crashes (as in 10 separate games, and I dont know how many times lol), corruption and so on......but i guess i've come to live with it and accept it. Even now Colin McRae 4 crashes and simply doesn't work and in Far Cry the water and textures get corrupted at times.
On the other hand its hard to expect Nvidia cards or their drivers to be flawless either, but since I've never owned one I cannot tell you how much better their drivers are exactly, but I am sure those users also get crashes....What I can assure you is that my friend owned a Geforce 4 and he never had problems with it playing games, but hey one day the card fried. So yours and mine experiences with game crashes could be a minority or not, I cannot tell you since I don't have the exact facts.
Either way if driver issue has gotten to you, I understand. I just don't understand how people claim to say that ATI drivers have improved, because they haven't. With every major new game that comes out something always has to be fixed. The thing is that it doenst bother me because then I'll just play the games that don't crash or download a fix for those that do. If only ATI had bulletproof drivers, they would be unbeatable.