EDIT: Moe has kindly purchased a real Ventrilo server for us to use to replace the Teamspeak server I was running off my computer. It is a high quality, 50 slot server and runs greats. I'm sorry we switched to a different program, but Vent overall has higher voice quality than Teamspeak does.
You can download Ventrilo from
http://www.ventrilo.com/
The server IP is 70.84.146.90:3831
Enjoy!