If your role playing game is not played on message boards, choose the appropriate sub-category:

AOL => http://dmoz.org/Games/Internet/Roleplaying/Television_and_Movies/Star_Trek/AOL

IRC => http://dmoz.org/Games/Internet/Roleplaying/Television_and_Movies/Star_Trek/IRC

Play-by-E-mail => http://dmoz.org/Games/Internet/Roleplaying/Television_and_Movies/Star_Trek/Play-By-E-Mail

Hybrid (unites different types) => http://dmoz.org/Games/Internet/Roleplaying/Television_and_Movies/Star_Trek/Hybrid

Non-Star Trek roleplaying games should be submitted in the appropriate sub-category of: http://dmoz.org/Games/Internet/Roleplaying