Thanks!, yes I've another question!..
I was reading the document but I can't figure out what SiRF Software is the ET-332 Engine Board using. The Sirf Protocol document has a Table (Table 3-3 for Output Messages) which shows supported messages for different software options: GSW2, SiRFDRive, SiRFXTrac, SiRFLoc, GSW3&GSWLT3, SiRFDiRect and GSD3tw. I'd like to match ET332 Software with one of this if its possible. I guess it's GSW3, but I'm not sure.