Been trying to burn some torrents onto dvd today and have come across a problem that I can't seem to get my head around.

I use nero express and burn the movie files onto a data dvd so I get 6 movies on 1 dvd.
Everything is fine until I click 'burn' at which point a 'save image file' window pops up asking me where I want to save these files. This has never happened before and normally at this point the dvd would start to burn without problems.
How do I bypass this 'save image file' thingy as I just want to burn the fecking movies and I'm now not able to.

Thanks for any advice.