How to enable Remote Desktop on remote machine

http://oreilly.com/windows/archive/server-hacks-remote-desktop.html
1) connect on the machine using regedit.exe (from File / Connect Network Registry)
2) Go to the key HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server
3) Change fDenyTSConnection from 1 (Remote desktop disabled) to 0 (Remote desktop enabled)
4) Restart the system by using the command
shutdown -m \\ -r