Adding an addition sound channel to DVD keeping menu

[lintran]

Hello everyone,First,my English ability is not well,so I'm sorry for any inconvenience may caused you to understand me.
I have some questions wanna ask you guys
Exam : I have a DVD with motion menus and 2 sound channels in it
(Called X and Y) and I wanna add another sound channel (called Z) into this DVD and still keeping orginal menu.Here are some options that I wanna do :
1.Replace X(or Y) channel with Z channel and ofcourse Z channel is selectable in menu
2.Adding Z channel without replace any original sound channel ( and I think Z channel is unselectable in menu,unless menu will be edited)
Plz you guys tell me the way to complete these tasks
Any help would be appreciated :thanks:

[blutach]

Demux the movie with PGCDemux and Remux it with muxman but using Z where you want it.

As for editing your menus, please see the sticky - http://forum.doom9.org/showthread.php?t=99306. However, if by chance, your language selection emnu is a still (they often are and certainly can be made to be without loss of functionality), you can use a graphic editor to replace the name of the language you have substituted for language Z. Then use VobBlanker (http://jsoto.posunplugged.com/vobblanker.htm) to substitute the modified background - animated guide on site.

Regards

[lintran]

Thanks Blutach,I'll try follow your guide
Wish u all the best