A couple of options for connecting to What the Tech Live Chat (IRC):
1) The easiest method for most. Click here if you don't have an IRC client (mIRC, Icechat etc). You can use the Java applet (you need to have Sun's Java installed).
2) If you are familiar with IRC, and have a client installed:
Server: irc.wyldryde.org
Channel: #WhatTheTech
More details instructions using mIRC to come later.