Your static IP has to be set on Windows also. There is no option for setting the static IP in Limewire (It detects this automatically when your connection is set up right)
Here are instructions
http://www.portforward.com/networking/static-xp.htm
Also here are links regarding the wrt54g series (might have some usefull info)
http://www.gnutellaforums.com/showpo...13&postcount=7
(This is Sleepless BTW. Having some account problems with other Nickname)