1. Download Ventrilo at: http://www.ventrilo.com/download.php Note: pick the one for your operating system.
2. Create User name
(http://img268.imageshack.us/img268/9720/createusername.jpg)
3. Join server Note: password may be required in some servers
(http://img163.imageshack.us/img163/3174/joinserver.jpg)
4. Click connect.