How to make the camera not moveable?

[rodead]

well i made a trigger where in is set that the camera is vieuwed trough a certain point but if you use the scroll option from your mouse the vieuw is totally messed up so is there a way to lock the camera on a postion that it can´t be moved anymore?

thanks in advanced

 

[ManyTimes]

Lock the camera to the unit/position/w-e every 0.5 seconds...