Hi :) (...) There are at least 2 IR-Remote emulators for PocketPC's, so in theory, it's possible (but very hard) to use the IrDA port for IR comms with the RCX. (...) Go to (URL) and search for "RXCTools for WinCE" It is a port done by Rainer (...) (22 years ago, 18-Jul-02, to lugnet.robotics)