hmm you are not telling us which windows you have installed??
if it is XP try running the repair mode
if it is 98 go run and type "sfc" minus the quote marks

If that dont work you have to try your luck with Lady_Rain

Mea Culpa's Demesne Note; artwork for Avatar courtesy of NWN and CEP Old Elven Saying: "Never say Never if you're gonna live forever!!!" "I didn't do it, it wasn't my fault"