AE CSS Crashed on exportwith Vista

Ok. I have a few strange problems. Maybe sombody can figure out or has had the same problem. I recently got a new system with a duo 2 quad processor and Vista OS home ed. anyway, It seems that when I Export a Quicktime Movie file it crashes AE CS3 on the frame next to the last. So if I have 325 frames it will crash on 324 everytime. I was able to export the same clip as an mpeg4 no problem.

To top that, for some reason when i drag a clip from the project window to the Render Que it tells me that i need to put somthing in the render que when I press the render button. It dose'nt even recognize the file in the que.

And finaly problem three. I cant use my wheel mouse anywhere in AECS3 accept for the preview window but even then when i zoom in whith the wheel mouse it zooms all the way out. It zooms out no matter wich way I zoom the wheel on my mouse.

I need help bad on these issues.