When we say conversion we mean:
*.vhd to *.iso
*.vmdk to *.iso
*.vdi to *.iso
Finding an application to simply "mount" a virtual drive has been unsuccessful and there are not many options out there. I have not found one yet that is up to date and that works on current Maverick or Mountain Lion.
I understand that these are not optical media but neither is are my USB thumb drives. I use your program to systematically backup my thumb drives to ISO so I can easily mount them in the future when needed.
I wanted these file formats to be supported so that I can back up my data on my virtual machines to ISO format so that I can mount it easily in the future.