If I recall correctly, DVD+R drives are designed so that they work like a normal filesystem. In other words, you can simply open them in Windows Explorer and drag the files onto them.

The only time you *need* to do special burning is when you're trying to make something that'll play on a DVD player. Otherwise, treat them like a disk drive.

At least, the one firewire DVD burner we've got here at work is that way. Maybe it's something special about that model of drive, but I thought they all worked that way.