This is so you dont have to use the mibbit webchat on the trek radio site.
First off download one of these two great clients. I personally love X Chat 2.

http://www.silverex.org/news/
http://www.mirc.com/

Next is to connect to a server. In this case its the Trek Radio irc chat channel.
If you need help best to check with that client's help section but it should be easy.

Address: frozen.coldfront.net
Port: 6667
or
Hostname/port: frozen.coldfront.net/6667

Channel to join: #TrekRadio

Now to do this in the chat itself without using the client's interface just type /server frozen.coldfront.net 6667 and hit enter then type /join #TrekRadio

If you need any more help please feel free to post here or ask me in game /tell Christina@DjChrisX