Originally Posted by Icehouse

The extra ports are for anything like laptops, printers, switches, etc...

If your router is emitting a wireless signal then any wifi enabled device (laptops) will see the signal and you connect the exact same as the Kindle does.

No limit...but its like a bottle neck, the more people sharing the signal the slower it will get..

So, no, you wont have to do anything special at all. Turn the laptop on, choose a wireless network, connect to it and BAM!!