It sounds like you may be encountering system file problems. Click start and admin tools then event viewer and look at both application and system folders. You may need to insert the XP CdRom and run a system file repair. It won't wipe any of your files as long as you don't do a complete reinstall. Good luck!
I am using XP Pro. and I installed so many program in different time. But when I try to arrange the program in the start menu, I can't right click. So I can't see the Sort By File.
Could U help me to find out right clik, so I can arrange my program nicely.

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