Go to
www.lonerhino.com/argyle/ruminations - you can check out the message boards for Argyle and register if you are interested. Once you are registered on the message board the Technical Information forum will become available - if you go there you can go to the server information section and get the IP address and password for the test server. The best way to connect is through direct connection.
(Thanks to smass for that...I just copied and pasted one of his posts in the BotB forum.)
Also, once you regester, you can also then download the hakpak needed to play.
Note to anyone that reads this: Argyle is a strictly
role-playing server. No powergaming or metagaming. In character stuff only.