This has been very useful for me a number of times, how to remotely enable Remote Desktop Connection (assuming you’re an admin on the remote machine).
Use regedit (go start->run->type regedit->ok).
Connect to the remote machine (In regedit go file->Connect network registry…->Enter the remote machine’s name (no \\)->ok)
Go to this registry key:
if it doesn’t exist create it as a REG_DWORD (new DWORD Value), set it to 0
You may have to reboot the remote machine to get it to pick up. Try remote desktop, if it doesn’t work run this command to reboot the remote machine:
shutdown -m \\theMachine -r
Thanks to many sites that I’ve found this on over the years, the most recent one being oreilly’s site: