Use Snow-IRC from your USB-Stick, of course you can use it also on your desktop pc.
It supports:
1.DCC file download and chat
2.Several server connections
3.log for all messages
4.an lots more
Soon there will be a script-environment for Snow-IRC!.

SoftSea.com had fully tested and uploaded the install files, Snow-IRC does not contain any adware or spyware, the latest version is 1.0, you can download this software (514.23 KB) from special server of SoftSea.com.

The license of this software is Freeware, you can free download and free use this irc client software.