First of all.. i'll show you a link you might want to read:
http://forums.eqemu.net/viewtopic.php?t=1880
Second of all.. this is an emulator for everquest.. as long as you know that much.
There are two ways you can use the emulator. You can host your own server.. which you would get full power and use.. or you could log into the EQEMu main server.
If you want to connect to EQEMu main server:http://forums.eqemu.net/viewtopic.php?t=8
If you want to host a server... good luck.
Also.. I would suggest reading this:
http://forums.eqemu.net/viewtopic.php?t=2198