[Daveskater]

I'm assuming you mean you have an 8.5GB dual layer disc as opposed to 7.5, because otherwise the two 4.7 discs won't fit onto it. Clone DVD 2 is a good program and will probably let you put two discs onto one, but I don't know what it will do about menu's, if it has them. You could also try Nero Vision, I can't remember off the top of my head if it supports .vob files etc, but look on the website and it should tell you.