Are we talking just 'programs' here or do you want to completely wipe your
hard drive, reinstall the operating system and then install your programs?
There is quite a difference between the two options.
Simply removing your programs can be done by using add/remove programs
option in control panel. If you want to reinstall your operating system then
i suugest you visit my website
http://xphelpandsupport.mvps.org Click the
Win XP Faq button and read through questions 7, 41 and 85. These
instructions apply if you have a boxed retail copy of windows xp. If your pc
came with 'recovery disk(s) or a recovery partition then i suggest you read
through your pc's user manual to see how to reinstall.
Whichever way you do it make sure you have backed up any important
documents/files that you need to keep because reinstalling the operating
system will wipe the drive and you will loose anything that is on the hard
drive.