If you use Nero, it should automatically burn it as an ISO image. I've had it sometimes where you need to unzip it, then copy all the files, and then burn it. If you have Nero, try the first way. How large is it? If it's under 4.6GB, then a standard DVD will do. If it's larger, then you will need a burner that burns Dual Layer DVDs, and a Dual Layer DVD. Most ISOs that I have seen usually fit onto one single layer disk.
