After you install your game, you'll need to download patch 1.0.2 - http://www.gamershell.com/news_68142.html and patch 1.0.7 http://www.megaupload.com/?d=XEJSLEO7 after that crack your game with this crack http://www.megaupload.com/?d=UT8DTX4S and of course multiplayer at this site http://iv-multiplayer.com/.
Now start your IV Multiplayer and install it. Then run IV Multiplayer and your game will start. First change your settings - nickname and then click servers, refresh and choose server to play on. After you connect first thing to do is to register... press T and then /register "your nickname" and after that /login "your password".
That's all folks. If you have any questions just type in comments.