Please explain to me how to create cameramovement such as in the intro to "Tombraider The last revelation" were the camera fly thru the "world". Right now i''m using keyframes for simple movement, but i would like more smooth turn''s. How do i create thoose smooth and nice camera movements?

What you need to use are ... spherical interpolations using quaternions.

There is a real good article here that should get you started:

http://www.gamasutra.com/features/19980703/quaternions_01.htm

but be forewarned: there''s some pretty heady math in there - more complex and difficult to grasp than matrix transformations, but the results are worth it. =)