(/msg nickserv REGISTER password email) to register the name you are currently using. It will send you a confirmation email and a code to type.
This is a lot more open than the old chat, and allows you guys to use seperate IRC clients.
The channels are:
/join #EquestriaDaily (PG Chat)
/join #EquestriaAfterDark (Adult Chat - no rules aside from no spamming)
/join #EquestriaDailyRP (Roleplaying)
Go test it out!