We live in the country and our only high speed connection is via satellite. We're getting ready to change providers and will be using a wireless router to connect an old iMac (10.4.11, 1GHz), a newer iMac (10.4.11, 2.16GHz duo), a Toshiba laptop and a Dell PC. We've never done wireless before and would appreciate some advice: 1. What does the old iMac need in order to go wireless and can we install it ourselves? 2. What router is recommended that will work with both Macs and PC's? Thanks!