Help with AVI files on disks!

Hi everyone,
I am hoping someone here can help me. Awhile back I bought some disk off of I think ebay or something like that, and well they were for my nephew of the old Ewoks cartoons. well when I intially bought them I thought they were like DVDs-and would play in dvd players. well after
emailing the person i go them from, i found out they can only play on computers. I tried to play them on my XP Home pc and I get where it looks like it going to play in, I think, Real Player or Media Player, and then it changes the screen to just audio as if I were playing a music cd.
The audio is correct I believe, but I am wondering a
couple things.
1. What do I have to do to get it to play correctly on my computer?
2. I have a DVD burner, how would I convert it to a DVD? do I need special software or what?

If anyone could please help me out with this I would GREATLY appreciate it!
Please if you are going to reply, can you please email (dmartin@popp.net) me the answer too, cuz I dont always have access to this website.

Thanks in advance!