Wow, what a lifesaver (or at least an annoyance reducer)! I uninstalled Microsoft Office 2007 Beta-2 from my Windows Vista PC a few weeks ago but did not get around to installing the Office 2007 production version until this weekend. Unfortunately, my Office 2007 installation CD generated a weird error. So, I downloaded and installed the freeware...

Virtual CloneDrive 5.1.4.5

...from SlySoft and installed it in Windows Vista. This utility lets you mount ISO and other binary files as a virtual CD (just like its name). After installing it, I double-clicked on the Office 2007 ISO file from my MSDN subscription and up came in the installation window.