"install DVD Shrink instead"
Good idea to use Shrink, but it sounds more like a problem at the burning stage, and Shrink stinks as much as the next app when it comes to burn DVDs...
Don't know Express, but if you can create an ISO with it, better use Decrypter or Nero to burn the DVD.
If this is not possible, why not joint the happy clan of Decrypter+Shrink users? The learning curve is very short, and the results are consistent.