Hi Gang,
In the event that you build a 64bit system running a 64 bit OS (XP Pro 64 bit in my case) you may encounter the same problem that I did with CD/DVD burning software. The CDRW worked fine reading, it just wouldn't write using Nero6 and they wanted to sell me a upgrade. So I searched for what seemed forever and found "ImgBurn" which works fine so far. Not lightening quick but works nonetheless. It's also Free/Donate ware.
Here's the link
http://www.imgburn.com/