Can someone help me out i cant connect to anyone?

[supergallas]

hi people i have just changed my router to the bt home hub and i sign into xbox live no problem but when i search for games on pes all that comes up next to the game is a red bar, it says unable to connect to opponent never had this b4 wit my bt voyager router, i have upnp enabled in the router settings am i missing something?

be greatfull 4 any help

cheers