Check out CDBurnerXP. Despite the name, it should work on Vista. It's free and fairly Nero like before they started adding huge amounts of bloat to it in version 6.

Otherwise there's Alcohol 120% which probably has more features, but it's not free. Your call. I generally avoid Roxio as much as possible since it's just as bad as Nero, only in different ways. Can't think of any other general purpose CD/DVD burning programs.