My sister's boyfriend seems to have accidentally deleted a registry setting using SpySubstract from Hewlett-Packard. but ever since he did that I haven't been able to open any shortcuts to anything at all (there are alot of them). I had to open Internet Explorer through a whole different program. When I try to open one it comes up saying "Windows cannot open this file: AOL Instant Messenger.lnk" "To open this file, Windows needs to know what program created it." . Now it used to just automatically open up. Does anyone know of a fix or do I need to reformat? Thank you.