Since EarthDesk is a carbon application and not cocoa (according to this:
http://forums.macnn.com/showthread.p...ght=earthdesk), you cannot just edit the Info.plist file. I tried making the app hidden on startup and it still shows in the dock. That same thread also says: "He needs to edit the app in Resorcerer or ResEdit and edit the plst resource instead. It's functionally equivalent to the Info.plist file."
Any idea how to edit a "plst resource" or hide this dock icon?