From the article:
http://www.mydigitallife.info/keyboard-shortcuts-in-remote-desktop-connection-rdc-for-navigation/
- CTRL+ALT+END: Open the Microsoft Windows NT Security dialog box (CTRL+ALT+DEL)
- ALT+PAGE UP: Switch between programs from left to right (CTRL+PAGE UP)
- ALT+PAGE DOWN: Switch between programs from right to left (CTRL+PAGE DOWN)
- ALT+INSERT: Cycle through the programs in most recently used order (ALT+TAB)
- ALT+HOME: Display the Start menu (CTRL+ESC)
- CTRL+ALT+BREAK: Switch the client computer between a window and a full screen
- ALT+DELETE: Display the Windows menu
- CTRL+ALT+Minus sign (-): Place a snapshot of the entire client window area on the Terminal serverclipboard and provide the same functionality as pressing ALT+PRINT SCREEN on a local computer (ALT+PRT SC)
- CTRL+ALT+Plus sign (+): Place a snapshot of the active window in the client on the Terminal server clipboard and provide the same functionality as pressing PRINT SCREEN on a local computer (PRT SC)