I need to add an appliance to my existing network, i.e., a Power Imac G4 (2002 half-dome model). my router is a Cisco Wireless modelE1000. Currently, the G4 cannot pick up the signal, although my iPad and a Mac laptop are able to do so. The G4 does not recognize my home network or any other, so I can't get onthe Internet with it. What to do??