Hi stuc100 - this ain't related to your topic, I found I had problems with Sonic MyDVD especially when a movie was of 2 hours in length and copying it to DVD. Sonic are aware of this as its in their documentation. The problem is when burning the movie to DVD the Voice and Video weren't in parellel with each other. This is really annoying.
I found Adobe Encore DVD quite useful when burning home movies to DVD and Cyberlink Powerproducer havent had problems with the audio and video with these.