WLIrc is a freeware J2ME MIDP 2.0 IRC client for Java capable mobile devices like Nokia S60 3rd Edition and Sony Ericsson UIQ 3.

Channel text, namelist and type text in same screen
Runs in background
Native support to Send/recieve DCC files
Connect to multiple IRC servers simultaneously

WLIrc also provides the following desktop computer server software

DCC Proxy
Server for sending DCC files with WLIrc (for problematic mobiles)

Bluetooth server
This server allows you to use your desktop computer’s internet connection when using WLIrc.

Http proxy
For phones that don’t support TCP/IP connections

Download Link- http://thesverre.servebeer.com/wap/WLIrc2.jar