I'll list the corrections by severity as I notice them or they are made know to me.

1. Chapter 9 - PDA Robot Software for Pocket PC 2002 ( Windows CE ) : Page 184

In the function CPDABotDlg::OnRange() the send function should read:

ret=send( Infrared_Socket, (const char *) "g", 1, MSG_DONTROUTE);

The microchip has been programmed to send the range (taken from the range finder) to the PDA via the IrDA link when it receives a "g" not "d" as printed in the book.