Here's an annoying fact: Dell ships a severely limited version of Roxio tools that can't even burn an ISO image to CD. I didn't really appreciate being pushed forcefully towards a $69.99 upgrade of a tool that issues an AV every time I try to register, so I went looking for a trustworthy alternative.

I chose the XP Support Tools option at the bottom of the page, and it works like a champ. Simply type the following to burn the ISO:

cdburn e: MyDisc.iso

Another option would be to mount the ISO via MS Virtual CD Control Panel.