When converting avi with nero I always select DVD-Video. There is a meter that tells you how many files you can fit. It all depends on the size of the avi file.
Post back if you have any problems.
I have some avi/divx files that I want to burn to a dvd that can then be played on a stand-alone player. Using Nero, what is the best format? Do I need to convert to svcd or something like that, I really want to squeeze as many eps as possible onto a single dvd. I've tried burning as data disc, no go of course, then as UDF/DVD-ROM and that didn't work either.