Seems like wireless networking troubleshooting threads are popular, so I thought I would join in just for fun I have a network set up, let's call it XXXX - my D-Link router plugged into my DSL modem, with my iMac and a Toshiba laptop both connected to it. Now, I got it set up earlier and everything seemed to work fine. But then my iMac's connection to the Internet would drop off; now I can't get back on. When I look at the Network Status, it says "AirPort is connected to network XXXX. AirPort has a self-assigned IP address and may not be able to connect to the Internet." Does anyone know how to fix this problem? Is it a router setting? (I am able to "leech" off another network which is how I'm accessing MR right now, and although it initially gives me this same "self-assigned IP..." dialog, it goes away and I can connect to the Internet.