Each device within the wireless network (computer, printers, auxiliaries) must be installed with a Network Interface Card, or NIC. The NIC transmits wireless signals from the access device and enables each device in the network to send and receive signals.
Installers must also decide which of three industry standards by which to designate to the network. These industry standards are 802.11a,802.11b, and 802.11g -- these names differing only in the last letter. The "a" standard is the least common and incompatible with "b" and "g." The b standard is most common. The g standard enables more robust digital downloading, and can support with b. The b standard, however, cannot support 'g'.
Most wireless network router sets will come with a set of instructions. Essentially, the EtherNet cable that had traditionally gone into the computer is instead connected to a router. Each device must configured on it's first use, a setup process wherein information such as the IP address, time zone, and other variables is entered. Some setup processes will require the establishment of a password, for a more secure or safe connection.