I have an iMac running 10.5.8 (Leopard). I installed and activated the Parallels 7 trial (plus Parallel Tools) after seeing that it would work on my Mac. Then I installed Windows 7. Everything was working perfectly; then I tried to install Practice Partner 9.3.1, a Windows app from Elsevier (a tech at the company confirmed that the app runs under Windows 7). I can see all the files on the app's installation disk from my Mac Desktop. But when I start Parallels / Windows, the app installation CD completely disappears from the Mac Desktop. I was told to make a new folder on the Windows Desktop, which I did, and copy the setup.exe file to that folder from the app's installation CD using drag-and-drop. Can't do that when I can't see the installation CD. In Windows 7, when I click on Computer and look at the drives, I see the installation CD; when I click on that, the turquoise circle spins forever and nothing happens. Any idea how I can get this app installed?! Thanks in advance for any help! Lynda