I'm want sample network component

I'm want sample network component
such "chat" or other.

I' development application server by socket on Delphi
The PPC can connect to my server app
but it's cannot send or read string

There is a chat example here: Basic4ppc - Windows Mobile programming and Pocket PC Development
You will need to send all data as bytes if your server code was not written with .Net (or Basic4ppc).