I get a LOT of email about the missing link in my Ultimate Tools list wondering how to Mount ISO files. Apparently, now it's distributable, and you can get it from Microsoft: Virtual CD-ROM Control Panel for Windows XP. Damned useful, especially when you have 200+ Gigs of ISO files. :)
The following tool for Windows XP allows image files to be mounted virtually as CD-ROM devices. This tool is provided here for your convenience, and is unsupported by Microsoft Product Support Services.
(Via Mike Gunderloy on win_tech_off_topic - this tool is pointed to on the MSDN subscriptions FAQ page - click on "What are ISO image files and how do I use them?" and the link is near the bottom of that section.)
[Via Adrian Bateman (VisionTech)]