Below the best freeware remote computer :
1. mstsc (Remote Dekstop by Windows)
using start menu > run > type “mstsc” without “. After that, windows will showing form input box for input IP address destination, ex: 192.168.1.1 .
If remote connection is full / maximum exceeded using cmd : “mstsc -console”
website : http://www.tightvnc.com/
this software have server side and client viewer side. After install this remote don’t forget open port firewall, as usual using default port 5500
this software is powerfull remote using internet without IP public.