
step 1:
if windows will load and function, you need to transfer/copy anything from the documents and settings folder(this is where the my documents is stored as well as any personal settings) into a new folder like c:backup for example. after you are satisfied that you have everything you need, move to the next step.
step 2:
boot your pc with with your xp cd and go into the recovery console. there are also many different utilities on the net that will give you access to the files on the hard drive via a GUI... too many different ones to go into any detail about them

delete all of the following substituting "username" with the name associated with the username you use and anyone else that uses your pc:
WINDOWS
Program Files
Documents and SettingsusernameApplication Data
Documents and SettingsusernameLocal Settings
Documents and SettingsusernameNTUSER.DAT
Documents and Settingsusernamentuser.ini
Documents and Settingsusernamentuser.dat.LOG
step 3:
reinstall windows xp leaving the filesystem intact(no format)
hope this helps someone
