From MSDN Downloads:
"Common utilities for writing an ISO file to recordable media such as CD-R include ISORecorder and Nero. The contents of images files can be extracted to hard drive using utilities such as ISObuster or DaemonTools. Image files can be mounted locally using the Virtual CD-ROM Control Panel for Windows XP."
Through: Mark Brown
To complete the ISO / Burnsoftware list, some other freebies:
Deep burner, a good free piece of burn software with a nice interface:
http://www.deepburner.com/download/DeepBurner1.exe
Another one with some more options but with a less intuitive interface:
http://www.burn4free.com/