I'm using Parallels 7 to run Windows XP Home on Lion 10.7.3. Works well. I now want to install Windows 7, but I don't want to remove Windows XP (I'm a developer and I want to test my programs on both versions); i.e. I want to have two virtual machines under Parallels. I don't want to run the two at the same time, just have both available. I can't see a place in the Parallels documentation that makes it clear how to do this - they seem to concentrate on upgrading from XP to 7 which I don't want. TIA for any thoughts or suggestions. Graham BTW I have a legitimate (OEM) version of Windows 7 on disk waiting to be installed.