Hey thanks for that pointer -- nice resource to know about, if it really does what you hope it does. Short of that, the first approach I could think of involves having a 2nd computer with two serial ports (or a total of three ports on one box), and have a script that "intermediates" between the weather station and the sucky user app -- the script just needs to make sure that everything gets passed through in both directions, and also gets saved to a log file with suitable annotations.