Mount CD images with a doubleclick
Roxio Toast 5 and 6 for Mac OS X provide an extension to load
a cd image (.iso) as a virtual drive on your desktop.
This is NOT the same as mounting with Disk Image Helper. Any normal application will see the disk as a real drive and you will not have to insert the disk into your drive.
ToastMount is registered as a project at sourceforge.net, please visit the project page at http://sourceforge.net/projects/toastmount