Linksys static internal IP

From: 2minutehate (solarpoweredx_at_yahoooo.com)
Date: 07/28/04 

Date: Tue, 27 Jul 2004 22:27:58 -0400

I've got a Linksys BEFW11S4 router that works fine. What I would like to
do, though, is to be able to assign my PowerBook running OS X a static
local IP-- something like 192.168.1.123. I get my real IP via DHCP. How
would I go about doing this? I'm mainly looking to doing this to make
connecting to IRC networks that require ident (or whatever it's called),
which uses port 113-- which needs to be forwarded to the internal IP
changing PB--, easier. (Meaning I won't have to look up my internal IP
everytime I want to connect to IRC; it'll always be 192.168.1.123).
Thanks.