ADDING or REPLACING AUDIO track on a DVD... how ?

[tonemgub]

Hi ! Here's the situation...

I own an original DVD Region 2 with English, Italian and German languages on it.

I would like to edit that DVD so it contains the French audio track which I recorded and I have in .WAV format.

What's the easiest way to achieve that ?

Also, can I edit the original MENU from the DVD to add French in the audio language selection for example ?

Finally, will I be able to burn this RE-AUTHORED DVD as a NTSC Region Free DVD ?

I have plenty of softwares like Vegas and Ulead and stuff....just don't know where to start and I haven't found any tutorial on doing this...

Thanks in advance !!

[guns1inger]

There are guides for replacing audio using ifoedit, which will be close. PGCEdit has a guide for editing menus in an existing dvd. Have a read and see how you go. I don't know of any easy, single software solution though.