I am using Parallels Desktop to open Windows XP on my mac. I used to use Boot Camp so when I restarted my Mac I could start up Windows. I just bought Parallel Desktop and everything is was working fine until I came to the log in screen. I am able to move my mouse and everything moves smoothly. Except the key command CTRL-ALT-DELETE that the Windows always asked me for to log in (on Boot Camp too). It does not work in Parallels Desktop. My thought on this is that the command for the mouse and keyboard to exit the window is CTRL-ALT... So somehow they are mixing up or something.....