I currently own an iMac G5 (Rev. B) and am thinking of purchasing a laptop in the future (either a Powerbook or an iBook). I was wondering if I could create a wireless network with my iMac alone. I currently have a landline internet connection (DSL) plugged into the iMac. Can I set it up so that the iBook can get a internet connection from anywhere in my house, without plugging it into the wall, using only the iMac?