Problem with graphics in Windows (Boot Camp)

First thing, english is not my first language, so excuse me for any typing mistakes and if I don't express myself clearly enough...

So, I have Windows XP installed on my MacBook Pro for like 6 months, and it was working great until now...
Today, when I started the computer on Windows the graphics were terrible, the resolution was the smallest possible (less then 600x800 i think?) and I cant put them bigger them that (like 1024x1080). I tried re-installing the drivers from the Snow Leopard CD but no luck... Oh and yesterday I updated the bootcamp through apple software update (maybe it has something to do with that?). Can someone please help me? If you need to know anything else just ask...

Ok, so if anyone has this problem in the future I solved the problem by uninstalling and reisntalling Boot Camp on my Windows. Repairing does not work, you have to re-install it