Most Linksys devices have UPnP & it is enabled by default.

There's a lot of links but worth checking thru for past experience:
http://www.gnutellaforums.com/showth...threadid=38788 Configure ZA
B link , _____ C link , _____ D link , _____ E link , _____ F link , _____ G link

Also you may want to try deleting your LW Preferences folder whilst LW is closed; instructions here: Point #2 & 3 in Fixes for Limewire (sample image included at bottom of page.)