Help!! I have 2 computers that I want to hook up to my cable modem... I have a PowerBook which I connect to my cable modem through a wireless access point. I want to add another computer (an older iMac, which doesn't have wireless built in) so I can get internet on both. How do I do this??? For my iMac I bought a Hawking Wireless USB Adapter and was told this would allow the computer to connect using wireless, so we can just share the wireless connection. So far, I've had problems doing this. I can never get the right IP address. I tried called Lynksys (the makers of the access point) but they wanna charge me for tech support. So I didn't do it. Do I need a router? Is the USB adapter useless?