I ran across a nice open source CD emulator software WinCDEmu:http://wincdemu.sysprogs.org/
For simple image mounting this software has several traits that make it convenient.
1) You don't have to allocate a drive letter until you mount an image.
2) The reason for my post.. if you use Tray Open Button on the drive letter, the image is unmounted just as if you selected Eject from the drive letter context menu.
3) At least on Vista, it went on, mounted and unmounted an image without rebooting the PC after install. PC World gave it a glowing review. In this case simple is good. The emulator I was using had about 20 tray commands I never used.
The only reason I brought it up was AutoIt3 said the Open command I use in Tray should work with virtual drives. This is the first one I tried that actually unmounted in response. Just makes it a bit more convenient than going into a tray sub menu. Of course the emulator software itself is set up to be convenient. Double click of a supported image file mounts the image. No messing around in tray icon sub menu to get to mount/unmount. Also it supports mounting more than one image according to the site.
here's the PC World review:http://www.pcworld.c...250/description.html