Restrictive NAT - Age of Empires Online

[#1]

I have seen similar threads about this issue, but all of them are too advanced for my level of understanding. Please could someone explain to me step by step the process for removing the 'Restrictive NAT' that is stopping me from playing multiplayer on AOEo.

[#2]

if your router is a tg585v8
http://community.plus.net/library/gaming/increasing-gaming-compatability-with-the-thomson-tg585v8-xb...