This is way off base, but I need help, so here goes… I downloaded a trial version of the defragmenter, Diskeeper 10. Ran it once. Somehow, it has replaced the Disk Defragmenter that is packaged with my OS, Windows XP Home Edition! How do I restore the original utility? (Curiously, the shortcut in the toolbar is for the Windows' Disk Defragmenter, but when you click on it, Diskeeper loads.) If you can't provide solution, can you direct me to a forum that might? Thanks.