A configuration message is received from a first computer system. In response to the configuration message, a first wireless device is enumerated on the first computer system as locally attached mass storage. A registration message is sent to a wireless network. File information about a shared file is received from a second wireless device. The second wireless device is enumerated on a second computer system as locally attached mass storage. A shared block of data is received from the second wireless device. The shared block of data is sent to the first computer system as data that is stored on a locally attached mass storage device.