Well, I happen to know a little something about DVD authoring... but, judging from your warm acceptance of my help the first time around, I doubt you feel comforted.
Indeed, DVD authoring is actually much harder to do than video editing. Specifically, it's far more
arcane. You'll need a DVD authoring program like
Adobe Encore DVD. Even then, if you want to use custom menus instead of the pre-defined templates offered with the program, you'll have to make them yourself, using
Adobe Photoshop.
If you're on a budget (these are all expensive software), there is a free, open source DVD authoring "package" that you can get. You can get the source code to the command-line tools
here and you might be able to use a front-end GUI to these programs using this source code,
here. Unfortunately, having to compile the code will make it even more arcane than the Adobe solution. I don't suppose that, even if we were to compile them for you, you'd feel confident in trying to use the command-line programs yourself? Well, according to some, you get what you pay for... There's at least a tutorial you can follow,
here...
Depending on your computer skill set, you might be in a bit of a pickle, but I hope not. Good luck!