I've been trying to add audio to some finished Windows Movie Maker movies with Magix. When I go to import them, it says the active movie is 720x480, and the video I'm importing is 640x480. I click on "adjust" and then the video looks like it should in the preview monitor, but when I got to export it, it says the movie and export settings don't match, so I adjusted the movie settings to 640x480 thinking it would fix the problem. For some reason I'm still getting the black bars down the sides of the movie and the overall movie is squeezed in. Could someone please tell me how I can size up the movie properly? It is driving me up the walls!

thanks, it is much appreciated