Mount ISO Files Virtually
Full user review
"Best i've found"
I tried daemon tools virtual cd drive, and magicISO / magicDisc. The first wouldn't work, and the second caused my computer to refuse to boot up unless in safe mode.
This application works perfectly. (You just gotta read the readme*... dur ;-) And even better it works as an executable- no need to install!
*and realise that the 'system32' folder is in your 'windows' folder.