I'm running an early 2008 Macbook and recently had to install a new hard drive. I didn't have the apps backed up to save space on my external drive. When I restored my partial backup, it apparently included some of the previous Internet Security install. Now when I try to install a fresh copy of Internet Security it says I can't because "the following incompatible product(s) are already installed: Norton Internet Security." Internet Security doesn't appear in the Applications list in Finder. I'm not sure where to look for the rogue pieces to delete. Any thoughts? Thanks, in advance.