I haven't really ever used it so wouldn't know how long it's been missing but today I clicked on 'help and support' (start/help and support) and it came up with an error message saying 'windows cannot find helpctr.exe'. Does anybody know of a way I can retrieve this file WITHOUT having to reinstall Windows XP? In itself that is gonna be difficult as a Windows XP didn't come with this computer. All help much appreciated.