I just upgraded to Windows XP Pro from Windows Me. The installation went smoothly, but now everytime i boot up my computer, and login to my account i get a "Windows File Protection: Files that are required for windows to run properly have been replaced by unrecognized versions. to maintain system stability, windows must restore the original versions of these files." I pop in my Win XP Pro CD, and the box goes away, however, when i reboot or take the XP Pro CD out of my drive, it continues to pop up. It also pops up the WFP box continously when i launch certain programs. Any ideas why this happens? Thanks for any help.