An access point is a wireless hardware device that allows a wireless network to connect to a wired network. Many access points come with a built-in gateway that connects to the Internet. Installing an access point is much like installing an adapter, except that you must also duplicate information from your modem's network configuration, such as your user name and password for your ISP. Check the manufacturer's documentation for specific instructions.
When it comes to adapters, you can find PCI and PC Cards for both 802.11b and 802.11a, plus USB 1.1 adapters for 802.11b. (You won't find any USB 1.1 adapters for 802.11a because they're too slow for the newer standard.)
How to Set Up a Wireless Network
Follow this procedure on each computer: