The options are nearly unlimited. But quite simply with that Linksys you can plug it into your ISP's modem to generate wireless and cabled networks for both Macs and PCs. As long as you are working with "g" speed cards like the iMac's Extreme. Dealing with "n" speeds will require an "n" speed router and an "n" speed adapter for the iMac. If you need to extend the wireless coverage you can get a repeater, stick with Linksys, same brands tend to work better together.