First, you need to download, for your Windows computer, mIRC.
(Mac folks, you need one of these clients.
/server eu.undernet.org
into the bottom of that window. With any luck, you will wait a little while, and then a buncha "Connected" text will fill the screen. A "Channels" folder pops up. (What you may call a Chat Room is called a Channel on IRC. Just because.) I would delete all the channels already there, but you can leave them. You can type
#gifted
into this Channels window, or you can hit OK, and type
/join #gifted
into the status window. Wait a second or two, and #gifted should come up. A new window, with #gifted and some other crazy stuff at the top. Text will be there, saying "*** Now talking in #gifted" and some of that crazy stuff you saw earlier. Great. Type "hi" or something. If you just show up without saying anything, people are unlikely to notice, but most often someone is online and will respond if you just start talking.
) me if you have any problems. (X isn't a person. Just trust me.) Finally, just be nice to folks on IRC. Don't use all caps, it's considered shouting, don't get mad if people don't respond right away, sometimes there lag or someone is away, and just be kinda polite. Things go quite well that way.
You may want to check out the Contact Dylan Flipse page.