Can't Access Help and Support Center

Go to Start >> Run and type in: helpctr -regserver

To reinstall Help and Support:

Go to C:\Windows\inf\pchealth.inf. Right-click and choose install. Have your XP CD available.

Note: The folder is hidden by default. Go to Start >> Run and type in: control folders. View: Show hidden files and folders and uncheck "Hide extensions for known file types".