If you got a router or dsl modem you might have blocked/closed
ports....
The display games on the Zone use the following ports: 6073(UDP),
47624(TCP), 2300-2400 (UDP/TCP). 6073 and 47624 trigger 2300-2400
Now you just have to find a scanner you can use, try Port Detective
(find it on google.com and use the tucows.com address to get it) it's
easy to use and gives a neat read out and you can put in all the above
ports.
>> Stay informed about: Unable to join game!