Audio Sync Issues -VirtualDub,Avdiemux.MPC

Hello guys and gals.

I'm new to all of this so I apologise if i am asking a stupid question.

I am wanting to put all our old home camcorder tapes onto my PC to then burn to DVD. I use Virtualdub to capture direct from the camcorder via RCA cables.

This works great however I am getting a slight audio sync issue.

The audio starts around 3 seconds before the picture and carries on through out the capture. This happens on all 3 that I have tried so far.

I have tried the interleaving option, and audio sync options on Avidemux and MPC, however although this makes the sound go in slow motion. Deep voices, visual then slowing down etc.

How do you set this correctly so that the audio syncs with the video without affecting the pitch of the audio?

Thanks