I have multiple devices such as Xbox and Tivo that need network access. Buying an individual wireless game adapter for them is not an option and costly. I have a spare Linksys WRT54G wireless broadband router laying around and want to make the most of it. I scoured the Intetnet and found a hacked firmware that turns the router into a four port wireless Ethernet bridge. The site http://www.dd-wrt.com. A very good step by step setup here. But you could download dd-wrt v23 below. This zip file includes the bin file for different WRT54G model out there. The setup was very simple. This is what I did.

1. It is best to reset the config back to factory default by holding down the reset button in the back. Access the WRT54G console with a web browser at 192.168.1.1 admin/admin and go to Upgrade Firmware.
2. Select browse and choose the bin file for your WRT54G model and click upgrade firmware.
3. After the router is rebooted, access the admin console and click on Basic Setting.
4. Choose Client Bridged Wireless Mode. For Wireless Network Mode you could use Mixed, B or G-Only.
5. Enter the SSID of the AP that the WRT54G will be connected to. Remember, the WRT54G is no longer an access point. It is a client to your existing access point.
6. That it. The rest if just basic router settings that you should already know.
Download dd-wrt v23