Using Idvd to Burn *.mpg


What do i need to do to burn a quicktime movie (*.mpg) in iDVD. I have Quicktime Pro 7.0.1, iDVD 5.0.1 on a PowerBook G4 with 1GB Ram and running 10.3.9.

I converted my mpg to mov and burned it on iDVD, however, the disk came up with no sound. when i checked the mov, it didn't have sound eiter.

Any help is greatly appreciated.