Viewing Other Computers on a Wireless Network - Network and Sharing Center
The process for viewing other computers on a wireless network varies slightly depending on the operating system you are running with slightly different terms used. In Windows Vista and Windows 7, you'll need to go to Start > Control Panel > Network and Internet > Network and Sharing Center. Alternately, you can go to Start and type "Network" into the Search bar. A list of matches will appear. Click on the link for Network and Sharing Center.
You'll see a graphical display showing the connection between your computer, the wireless router, and the Internet. Just above that to the right, you'll see a link with the words "See full map." Click the link and the network map will expand, showing you the other computers currently connected to the wireless router. Each will be labeled with the computer's display name. For example, if you have two computers, one named Desktop and the other named Laptop, you'll see computer icons labeled Desktop and Laptop.
Viewing Other Computers on a Wireless Network - Windows Explorer
Windows offers several ways to get to the Network and Sharing Center including the Control Panel and Search bar shortcuts. You can also reach it via Windows Explorer. To get to Windows Explorer, right-click the Start button and choose Explore (or Open Windows Explorer depending on your operating system). Once Windows Explorer launches, look in the left pane and scroll down until you find Network. Clicking Network immediately displays all of the devices your network contains whether they're currently connected or not. For example, if Desktop and Laptop are currently connected, you'll see them in the list as well as other computers that are not connected such as "Netbook" or "Work Computer." You'll also see other network devices such as printers or shared storage devices.
Now look at the menu bar and you'll see a link that takes you to the Network and Sharing Center. Click that link and you'll see the graphical display of your wireless network as before.