We are running a Ventrilo 3.0 VoIP server for guild use.

You can download the client to install on your computer at:
http://www.ventrilo.com/download.php

Here are the settings to connect to the server:
Nickname: [use your main characters in-game name]
Hostname: ventrilo.boulderfistheroes.com
Port number: 3784
Password: Please Contact an Officer for the Password

Instructions on how to install and configure the client can be found at:
http://www.ventrilo.com/setup.php#Client_Installing

Same rules apply to Vent as they did for TS! Officers, the "O" channel has the same password!