I use official Microsoft client and I need to "press" Ctrl+Alt+Del or Ctrl+Alt+End. How do I do that?
Scenario: Your PC (node_1) and Remote PC (node_2).
Open the onscreen keyboard Start -> All Programs -> Accesories -> Ease of Access -> On-Screen Keyboard on node_2.
When you want to send ctrl+alt+del, press Ctrl+Alt in node_1 and click del in node_2. (Worked for me in node_1=XP and node_2=Win7)