I have a panasonic blu ray player. I would like to update the firmware and possibly access netflix with help of firmware upgrades. As of now, I have an airport express in another room with an ethernet cable connected to the blu ray player

I have imac4 (2005)
Running OS X 10.4.11 (Tiger)
Airport Express 802.11a/b/g

Is it possible to obtain an internet connection to blu ray player? If so, how? I have tried setting up a WGS to use imac as the base station and airport express as relay station.