This is a feature request for the Parallels Tools Center (on XP at least). I would love if the tray icon context menu could offer the user-defined screen resolutions defined in the VM configuration. That would allow a quick resize of the guest resolution, easier than using the ctrl-click on the desktop to access the display properties. Or maybe something along this idea, but in the side button bar of Parallels itself. There is a button to switch to full screen. When long-pressed that button could popup a menu of various resolutions... Just bringing some ideas. Keep up the good work.