At www.playbyweb.com in the Adult category: Birthrightadoptional Game (X-rated)

At rpol.net in the Medieval Fantasy Catageory:
d20 3e Birthright

At EZBoards:
http://pub98.ezboard.com/bmarquisheadroleplayinggame
The Marquis' Head Roleplaying Game
Currently Discussing which part of Cerillia to set it in.

At Phoenyx.net:
Have applied to moderate a Birthright style game, approval pending

In gerneral:
Just e-mail me: thomas_silverfish@yahoo.co.uk to find out about any other games.