In order to connect to the chat room you will need to use a client. If you're already familiar with IRC and have a client you can use that. Below I've provided links to web-based clients you can use to connect to the chat room. Also a selection of IRC clients you may wish to try which provide more functionality and flexibility than the web based systems. All of the web based clients will launch in a new window so that you can continue to browse the web.

PJIRC Activate
New Java Client to use, much more upto date than eIRC. Runs from within the browser.
In order to use it you'll need java support installed. Most systems will plugins are available for almost all browsers (IE, Firefox, Opera, Konqueror...)
I recommed giving this a try to anyone capable of using it, it is fairly easy to use and will be more stable than CGI:IRC
CGI:IRC Activate
CGI::IRC is ideal for people behind firewalls or unable to run Java clients. It's completely web-based meaning all you need is access to the WWW and a web-browser to use it. However, it is slower and less responsive but I'm afraid that's the price you have to pay. CGI:IRC

MS Chat Download
MS Chat is an easy to use client provided by Microsoft for use in Windows. In order to use this client you will need to download and install it. The information you need for connecting to the correct chat room is provided at the top of this page. Because of it's ease of use I strongly suggest giving this client a try if you'd like a little more functionality in the world of IRC but not looking for complete control. MS Chat
mIRC Visit
mIRC is perhaps the best IRC client for windows. The only drawback is that for newcomers to IRC it may be a little daunting. This is because mIRC is packed full of features and abilities that a lot of people won't even use. One of mIRC's most appealing qualities is the way in which it can be expanded upon and altered by the use of scripts. If you're willing to venture further into IRC or perhaps looking for a better alternative to MS Chat give this a look at. You can download a copy from the mIRC web-site. If you're using Windows 3.1 then a 16-bit version is also available. mIRC