The PocketPC Winsock TCPIP Extension allows Satellite Forms PocketPC applications to connect to TCP/IP based networks (such as the Internet). It is a minimal implementation of the Berkeley sockets standard. With the Winsock TCPIP Extension your PocketPC application can connect to hosts and send/receive data over any available TCPIP connection (eg. cradle, dialup, wireless).
The sample application included is called "TCPIP Sockets" and demonstrates the use of the extension to send and receive socket data (you will need a corresponding server program to test the sample app with).