That depends on how fancy you want to get with your DVDs. If you want to be able to edit the videos, create simple menus and add chapter stops at set intervals, I'd highly recommend the latest version of TyTool7r7a. It does everything in one complete package except burn the DVD. I haven't tried the latest TyStudio release yet as I gave up on it a while back due to audio synch problems that couldn't be resolved. Lots of people still use it so obviously it must be working better now.
Please don't PM me or any other members looking for personal assistance. You'll do better by posting (after you've exhausted the search feature, of course) and taking advantage of the collective expertise of the membership instead of a single individual that may or may not be able to help you. Thank you and enjoy your stay at DDB!