1 - set a static ip to your pc in your LAN See here 2 - Disable firewall on pc or allow remote desktop port 3389 See here 3 - Set password to your aco**** on your pc and make it member of Administrator See here 4- Go to your router's management page and forward remote desktop port to your computer's new static ip See here 5 - Enambe remote desktop on your pc See here 6 - Start Rdesktop 1.7 package on your N900 and type your computers internet ip you can get it from a site like whatismyip.org For easy use see if your router supports http://www.dyndns.com/ . If it does just open a free account and you won't need to remember your pc's ip all the time