Check in the Applications folder. It looks as though you might have dragged out the icon from the Dock. That's just a shortcut to the actual application (normally found in the Applications folder).
If it's not in the Applications folder, search for it with Spotlight. If it still doesn't find it, you can use Pacifist to reinstall it from your system restore discs.
do u guys have a link or somthing?! hehe!;p seriously cause im looking 4 it since june and i cant find it i searched it in app. and the CMD+F !
so can u guys give us a link? pleeeeease