STRICT NAT

halp my nat type is strict which means i cnt join you guys sometimes and idk how to change

yeh, go to the internet on your comp, nt the ps3, then on the ps3, go to internet settings and type in your ip adress on the web link thingy at the top of the internet screen thingy on your comp. It should come up with a user name and pssword. If your parents havent changed it, the defult is for user name: admin and Password: password. In one of the options on the tabs, one should be WAN type (i think so something similar), in that tab it should say ip adrress connection or something. On your ps3 internet settings, there should be an ip connection with lots of numbers. Type in that number code in the internet ip connection thingy. Save settings and restart your PS3.
When you restart MW2 the connection should be 'Open'

*ill edit this later when i get home and do it myself *