I often run multiple VMs at once - Parallels changes the icon if the VM is windows or linux, which is great to easy identify which machine you're switching back to. When running XP and Vista at once though, the parallel icons look identical. Is there anyway to change the icon for a specific machine?
Wait nevermind I found an excellent solution. Parallels Desktop Menu -> Preferences -> Apperance Tab. Select "Live Screenshot" for the Dock Icon. This also affects the cmd-tab icon. This is even better.