Last night I performed this hack on my Linksys WRT54GS router.  It is VERY easy to do if you follow the instructions provided by the people who make the replacement firmware.  I have since increased my wireless’s transmission power so I now get 95% connection status from the OTHER end of my house, which is good considering it was almost non-existant before.  I was also able to set up QoS (Quality of Service) so that my downloading gets priority ONLY if the phone (we use Vonage in our house) or my vpn are not being used.  So far I have to say it’s pretty nifty and Linksys gets extra points for using GPL software in their  routers.