The option seen in the 7000 builds for burning iso images of any type is rather touchy if it works at all. CDBurnerXP is way too outdated to begin with while DeepBurner isn't actually that far behind it there either.
The most commonly used freeware is ImgBurn which is used to burn disk images only.
The Official ImgBurn Website That's strictly a basic freeware with this type of burning in mind there.
Another much newer Vista ready as well as a late arrival for XP and offers a bit more seen in the free version then the above is called StarBurn that will run on the 64bit Windows as well as 32bit found at
:: RocketDivision :: Free Windows iSCSI Target, Initiator and CD/DVD/Blu-Ray/HD-DVD Burner
I've been using that one for about 2yrs. already seeing reliable error free burns each time whether on XP, Vista, or 7. For the features it offers it is still far from the bloated retail products like Roxio and others.