… than Virtual Clone Drive by Slysoft. 100% free (as of 2011.12.27) and no spyware. Painless setup and works like a charm. Thanks to http://www.HowToGeek.com for showing me the light.

HTG Article:
http://www.howtogeek.com/howto/windows-vista/mount-an-iso-image-in-windows-vista/

Virtual Clone Drive Download:
http://www.slysoft.com/en/download.html