I have a wired router with a PC, a G3 and an Airport Express plugged into it, through a DSL modem. I also have a PowerBook that wirelessly communicates through the Airport Express. All three computers can connect to the Internet this way, but the PB cannot network to the PC or the G3, but the PC and the G3 communicate. I suspect it's because the PB only sees the wireless Airport network. I'm sure this is an easy fix but I haven't been able to figure it out.
Thanks,