Run msconfig and stop any uneccesary programs from runing on startup. Empty out your prefetch folder, defrag your system, scan for adware and spyware and then see if that helps. If not I have more you can try. As far as trying Mac OS or Linux as some suggest if your not used to them I would pass. Mac OSX is ok, but I find it lacking in areas and Linux is great but you run into compatability problems if you ause your comp for more than just the normal browsing and stuff. Cheers