We use TS3 (free download) for communications. Feel free to come in and join the shenanigans.
We run T6-T10 depending on how we're feeling. We're also starting to begin Stronghold matches (though running a couple T5s until they get T6)
TS3 Server Info:
ts4.gameservers.com:9116
PW:
superpig
http://bootsnpants.net/