Boosting Linksys Router Signal

Ok, i happen to stumble across this site http://www.thibor.co.uk/ where you can upgrade your linksys router firware to enhance your signal strength. So, thats to say that no antennas or any range boosters. Well, sad to say that they only support a few models of linksys routers and mine is not included in their list :(

More support for linksys products can be found here: http://www.linksysinfo.org/index.php