The first way is to go to www.mirc.com and download mirc then install it. Do not i repeat DO NOT register it. If you do that then it will cost u money, and i know no one wants to lose any of that. Once you open it, close the window with the guys face in the top right corner then wait for the next window to come up. Click the add button on the right side to add a server. Type in Rpg as the description, irc.webmaster.com as the irc server and 6667 as the port. Then click add. Next you fill in the name, e-mail address, nickname(this will be the name u use in the chatroom), and alternative(this will be your name incase your nick is taken). Now click connect to irc server and wait for the channels folder to pop up. When it comes up click the add button on the right to add a channel. Type in #Mick's-DBZ as the channel and hit ok. Now select the channel u just added and hit the join button. Congratulations u are now in the rpg's chatroom.

The second way is to use the java plugin on the site that is found here:
Chat Room