Argh, now I'm all frustrated again. These programs have really annoyed me for the past few months....

Honestly, go find a local Apple reseller and see what you can do with iDVD. Most resellers, and the official Apple stores encourage people to actually use the products. I had a friend visit the local store with his camcorder full of video he has been working on, and they sat him down on a machine to see Final Cut Pro in action.

To respond to the first post, I don't have iDVD on a system to see how it stores the themes. Best bet would be to hold control while clicking the iDVD icon, and select "Show Package Contents". That will show you the internals of the program, and the themes may be easially extractable.

/me waits impatiently for the day he buys a Powerbook equipped with a DVD burner.