a: In 5 minutes we were able to perform these steps:
- Download & install http://www.autohotkey.com/ on the RDP server you are using to RDP into the second server.
- Allow the installer to create a default script.
- Add this line at the bottom of the script - ^!ins::^!End
- Save and close that script.
- Right click the HotKey icon in the bottom right & select "Reload this script"
- Now hit CTRL-ALT-INS and that will send a CTRL-ALT-END through.