Adding wireless laptop to eMac cable modem

My eMac 700 mhz is connected to a cable modem via ethernet. I want to add a wireless laptop also using the cable modem so I can use the laptop anywhere, without having to add Airport on the eMac also. How can this be done?

You can do this with a wireless router - any model sold by your local computer shop will do, and should cost you around $30-60. At home:
- connect the cable modem to the router's WAN or "internet" port
- connect the eMac to one of the router's LAN ports
- your new laptop will of course connect wirelessly
All this can also be done exactly as I described with an Apple Airport Extreme Base Station (costs $199). For that premium price you get a device that is arguably easier to set up for Mac users, and you get a built in USB port that can be used to share a connected printer between both the eMac and the laptop.

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