Creating an Infrastructure Network
Scenario: You want to share files and printers between more
than two computers and would also like to share an Internet connection using a
broadband modem (Figure 4.12). An
infrastructure network will probably work best in this situation.

Infrastructure networks take a bit more configuration than
setting up an ad-hoc network, but not much more setup time. Also, the additional
benefits of an infrastructure network—primarily that an access point allows you
to connect to wired devices, such as a cable modem, or wired networks, such as
an office Ethernet network—certainly make them worth the time to set up.
Adding an 802.11b access point will cost you between $60–$250,
plus the cost of the network adapters you will need for each computer.
An infrastructure network can be made even more useful by
incorporating Ethernet, powerline, or phoneline networking equipment.