Glad I could have been of service
There again I believe I have the answer to your prediciment. I don't know if there is a free trial. But my PC came with Nero burning rom 6 (think 7 is out now). That is a very usefull programme. And in there you can make a DVD from .avi files, and basicaly any other major video file there is going.
Easiest way when it all installed (if you do) is select
Start
Nero
Nero Smart Start.
There you can select what medium your using e.g. DVD or CD and it gives you lots of menus.
You can access the programme many ways just that is by far the easiest and quickest to understand.
EDIT: Ohh and the name is Jon not John lol