I made a 720 x 480 mpg 2 from a DivX file that was in 720 x 480

When I tried to burn it with Nero it said the file has to be in 480 x 480 or 576 x 480 so it was noncompliant. I burned it anyways ignoring standard compliance and the resulting disc gave me seriously screwy video output.

Can anyone help me out here? How can I burn a 720 x 480 mpg to have a playable X(S)VCD?

Thanks!!

Raz