When I got to schedule a custom scan in NIS 2007, the "My Computer" icon or C Drive icon doesn't allow itself to be checked so only my C drive will be scanned. I'm only able to schedule a full system scan, which does the C drive and all my external hard drives, and that can take 2 hours to complete. Can't figure out why I can't designate only my C drive to be scanned under a schedule. Could another program be blocking access to this feature? Has anyone else encountered this odd problem and then solved it? Thanks.