There is also 3rd party firmware available for most of the linksys stuff. Only one I can think of is "HyperWap". I had to do a little bit of searching on the web to find the firmware but it works great. It gives you the option to boost your antenna output and a few other things.
Some good stuff on this forum also.
http://www.linksysinfo.org/forums/fo...play.php?f=138