Hello, I found this guide quite by chance that clames it will speed up Windows. To me it seams abit risky as I dont know anything about 'Prefetch Parameters'. I would like some peoples opinions on this who know what there talking about as we all know editing the registry is tempting fate if you dont know what your doing. http://www.ircspy.com/guides.asp?mode=display&id=454 Thanks in advance.