You've probably tried everything in this, but I'll post a link anyways:
http://www.punksbusted.com/forums/in...howtopic=55862 (instructions in second post)
Something else to consider: When you enter the game (you don't have to enter a server), do you see in the Task Manager a program called PnkBstrB.exe running?
Do you have a software firewall running? Some examples of software firewalls would be any AV Internet Security products, BlackICE, ZoneAlarm, Windows Firewall, etc. If so, make sure that PnkBstrB.exe is in the "allowed" list.
Still looking though and I will post anything else I find.
***EDIT***
Found
this. Follow the link in the last step.
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