Thanks for helping me but so far I can only import mpeg clips, avi doesn't seem to work? Don't know what I'm doing wrong?

This is how I do it:

Create nurbsplane, then I open up the Hypershade and click movie under 2d textures and assign texture's material to selection. In the File Attributes I open up the image name (the Mpeg clip).

Then I check: Use Fram Extention. I select Frame extension 1 and then hold right mouse button to set key (I have the auto keyframe on in the timelider). Then I go to frame 30 in the time slider and in the Frame extension I print 30, that's my last frame. Then set key.

This works fine, but so far only on Mpegs...