Hi, I assume you want to use your box as router+WiFi or such. Instead of building the configuration from scratch, I would recommend to look at LinkSys WRT54GL, which is availabe on zap:
http://web.zap.co.il/models.asp?sog=&keyword=WRT54GL And then reflash it with Linux: http://www.lifehacker.com/software/router/hack-attack-turn-your-60-router-into-a-600-router-178132.php -- Arieh
