Had only a short time to see if I could make a backup of one of my DVDs yesterday, so maybe I did not check properly.

But how do you de-select the bits (say the extras) you don't want in DVD Shrink? I noticed that the film was about 3.5Gb, whereas the extras were 900mb. I tried to get rid of them, but wasn't able to. It wasn't possible to delete them or untick them?

I thought the logic were that you would remove these parts in order to avoid compressing the main movie?

Or what?

Philip,
your logic is alright but unfortunately it is far from always (in fact rare!) that you can ditch the extras, menus and secondary audio tracks, etc., and be able to fit the main movie on a 4.7GB disc. But ditching it you will not have to schrink the movie as much as if you didn't - and that is the whole point of doing it! Usually I'd say a regular 2 hour movie with ditched extras you can end up with a 80-90% quality which is actually very good.
Sorry but I can't help you out on DVD Schrink as I don't know it - I myself use CloneDVD by Elaborate Bytes (http://www.elby.ch/products/clone_dvd/index.html) which is very easy to use and gives you flawless results. They offer a 21 day trial download, you should try it out. But otherwise, try the DVD schrink as it is freeware.

/Lars