Originally Posted By: tfabris
in addition to trying to find other pieces of software that will interpret the NMEA stream a little better for me.


Maybe, take a look at http://code.google.com/p/snopilot/source/browse/trunk/tests/dump_nmea/nmea_sentence_collector.cpp. I've no idea if it compiles at all, but it might help you figure out whether the sentences are valid or not.
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-- roger