I used the firmware from DD-WRThttp://www.dd-wrt.com/site/support/router-database
took about 15 min from start to complete setup
I installed the latest dd-wrt firmware and followed the process on their site. I can only access the router if I have the computer in static IP. The router can find my home network but appears that it won't join even when the computer ip is static as I cant get to the internet through it. I didnt see a way to change the channel in dd-wrt so i had to change my primary router to match the 54g.
wrt-54g ver 1.1
dd-wrt v23 sp2