how do i burn avi files with nero?

hi my name is dre, i'm having trouble with nero its slow and
when i go to create a dvd and add/files and add an avi file then create chapters the screen is black what i mean is in the video box you can hear the movie but you can't see the movie. its pissing me off quite frankly. iv'e downloaded video plugins no help. what do you suggest?

 

never mind, i found out about vso ands copytodvd both good smart tools.