Earlier this week I was trying to install the Office 2007 Technical Refresh in preparation for further beta testing and started looking around for a way to mount the 1 GB .iso file as a virtual disk. Hat tip to Donny Mack for pointing out the Virtual CD-ROM Control Panel for Windows XP. From Donny’s blog:
Mounting ISO Files Virtually
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.
 You have no idea how much time this saved me.