Open source / freeware application for Windows 7 to create ISO images
I am a software developer. My development machine runs Windows 7. I have installed VMWare in order to test my apps on back versions of Windows by installing those on the vm. I need a free tool that runs on Windows 7 that creates .iso file of a cd/dvd. I want to store .iso versions of the OS discs for future use.
I didn't get much googling. Or probably since I am more a developer that a power user kind I couldn't find one.