You need a IRC client. If you are using linux, you can use konversation. Freenode normally is automatically available. All you have to do is to edit it and add the server narendra has mensioned at the server list. no password is required.
http://docs.kde.org/development/en/extragear-network/konversation/index.html -- Debasish Ray Chawdhuri Dept. of Textile Technology, IIT Delhi -- l...@iitd - http://tinyurl.com/ycueutm
