Hello nubbs0427, and welcome to the forum!
At the moment, you can only use voice communication through external programs like Teamspeak or Ventrilo.
There are a few people running servers, so if you do a forum search using "teamspeak" as input, you will find a few topics that may be of interest to you.
There wasn't a need to post your question in two seperate topics, so I removed your other one, I trust you understand.
I hope this helps!
Regards,
Fred