Strange shadowlines w/xp and amd dualcore

Strange shadow lines with dualcore and xp


Hey all;
I was wondering if anyone remembers what hotfix to use for xp when you install an amd dualcore cpu and you get everything has like a shadow line to it.By shadow lines I mean that if you look to the right side of a window that's been made small you can see a sort of shadow just to the side.Same with letters and numbers.If anyone has encountered this problem or knows how to fix it,I'd sure appreciate it if you could let me know.
Thanks
Dahak