Camera following crosshair?

Has anyone tried coordinating movement (ie direction) based upon crosshair? IE: In first person, when you move the mouse, the crosshair moves, then the screen centers on it? It's mostly used in games where you pilot planes....

I tried starting off, but then i wondered if i should put it in guicrosshairhud.cc or in camera.cc....


heh, i sound noobish x.x