A DVD menu is a pretty complex thing, You can do it on the mac, but I don't know what is available on the PC to re-use menus, I know programs like DVD Rebuilder have some control over changing what the menus do, but I don't know if it will do what you want.
You would probably be better of ripping the parts and rebuilding the menu in scenarist, or better still come up with your own menus.
if you want to make great discs on the PC then scenarist is still the best tool for the job. It is harder to learn, but has unmatched flexibility.