If you own multiple PCs,
you have probably thought about how great it would
be if your computers could talk to one other. With
your computers interconnected, you could:
Share a single printer between
computers;
Share a single Internet connection among
all the computers in your home or office;
Access shared files such as photos, music files,
spreadsheets and documents on any computer in your network;
Play games that allow multiple users at
different computers;
Send the output of a device like a DVD player
or webcam to other computer(s) within your network.