Whats the simplist way to correct sound sync problems?

Hi a noob here - wonder if anyone can help.

I have a movie in DVD file format (BUP, IFO and VOB files) residing on my hard drive. Unfortunately two of the VOB files have sound sync problems and id like to know how to recreate them with the sound fixed. What complicates matters slightly is that there are two audio streams.

Having followed the advice of someone on IRC, I used vfapi to extract both of the ac3 files the names of which have kindly told me the delays in both VOBs (124ms and 151ms respectively).

What Id like to know therefore is which program should I use to extract the MPG2 stream from the VOB’s and then recreate the VOBs using these and the ac3 files with the functionality of audio delaying to correct the problem when interleaving.

If anyone can help it would be very much appreciated. I have a whole range of software installed but am happy to install any program recommended for this.