zuluclayman

If you are wanting a DVD player playable DVD you will need to use Nero Vision - there you should be able to place your .avi files on the timeline and edit as needed.
a couple of questions:
If your avi files are not going onto the timeline, do you get a message? if so what is it saying?
what is the source of your avi files - ones you have made using other software? converted from video you have shot yourself?
do they play on your computer OK? do they play using Nero's player?
It may be that the .avi files you are trying to use have been encoded using a codec that either you don't have on your computer or that Nero won't accept.