How to Install it :
1 - Extract the files in your System folder (normally in c:/Program Files/Lineage II/System).
2 - Open the mod.ini and change the line 'Nick=L2Player' to 'Nick=(Your nick)'.
3 - Start your game and it will auto connect you to the #ia channel.

(ingame command : /ircc(connect manually), /ircd(disconnect from irc ingame),/m nick(PM someone in irc), you can check the others commands in Mod.ini file

P.S : You must have your Lineage Game not started

Don't forget to vote for IA at www.ial2.com.
