I setup some tutorials for wireless networking stuff. Things like how to build WiFi antennas, improve your signal, how to make a solar power supply for your router, etc. Most projects are centered around Linksys WRT54G running DD-WRT open source firmware but I just got a Buffalo WHR-G125 router so I'll be posting ideas concerning this router as well. For now I only have a tutorial on how to open WHR-G125. Take a look:
http://www.skifactz.com/wifi/