Did you succeed in installing CDEmu? If not, it's easy:
Step 0: be connected to Internet.
Now these in terminal:
sudo add-apt-repository ppa:cdemu/ppa
("sudo apt-get update" might be a good idea here, but you might be able to get away without it)
sudo apt-get install cdemu
sudo apt-get install gcdemu
(actual package name in above two lines might be wrong, going by memory. If they don't work, enter them in your GUI package manager.)
And like I said before, another "sudo apt-get update" could be good here.
Then right-click the panel, say "add to panel", and add the gCDemu applet. If it isn't an option to add to the panel, restart.
#Now give your brain a halftime. Moving onto seperate concept.
Now right-click the applet you put in the panel, and mount up to two images.
Go to winecfg and associate the mount paths of the virtual optical drive(s) with WINE drive letters.
Then swap as nessicary. Mount new images and then go in and assosiate them to WINE drive letters.
Cheers,
Jake
