This built in burner that cames with Vista, in my humble opinion shouldn't be used unless you don't have anything better. For exemple, I've just formatted my PC and while I'm lazy to install the programs that I really rely on I use these built ins.
Not that it's bad or something, it's just that you can do so much better with something else.
My favorites for burning are Nero and Roxio. But I must say I've run into some problems with Roxio, more than I could hope for, and Nero always has worked like a charm for me.