A Router is used to:

1.  Share files between other computers on the network.

2.   To provide Internet to users on the network.

3.   As Firewall to prevent hackers from getting in to your computer.

Lyttontec currently recommends the Linksys WRT-54g Router. The WRT-54g costs about $75-100 depending on where you get it... Our installation cost is $50.