as some of you might know i've been having trouble with my PS3 playing online games, on COD4 i could play online but could not invite anyone to a party or join them, well a mate says it had to be my internet configurations so tells me to go into my settings and change something called UPPN or something like that, well after i did that the internet test could not find my IP address so i thaught fuck this and put it back to the way i had it, did that and still wont find my IP address, i've even tried to do it manualy but it asks DNS codes

any ideas what i've done now ?

cheers