If you're looking for a simple, free, all-in-one network management tool for a small peer-to-peer network, this is the one to get. It handles all the basic network chores, including adding new devices to the network, fixing broken network connections, setting up wireless encryption and protection, sharing printers and folders, reporting on the state of the security of each PC, and much more.
For example, the network map, pictured nearby, displays every device connected to your network, shows whether it's online or offline, and displays details about each, including the computer name, IP address, MAC address, operating system being used, shared folders, and system information such as its processor and RAM. It also lets you change the machine name, and it displays alerts about each device, such as if it isn't protected properly. Overall, it's far superior to Windows Vista's Network Map.
The software's Status Center is also useful. It displays overall information about your network, such as whether there are any problems with overall security or with an individual PC. It also lets you troubleshoot connections, shows whether there are any intruders on the network, and displays information about wireless protection.