Thanks, I found it very helpful - I haven't been using unix much lately and the more detailed description really helped.

I didn't have my GPS mac address in front of me, so I started up Maemo Mapper to look it up in the settings. I found that Maemo mapper can now connect to the GPS, so I didn't follow any of the extra steps. This is on 2007HE (4.2007.46-3) on a N770 with i-Blue 737 GPS. In Maemo Mapper settings I'm using the GPS directly, not through the File Path or GPSD options. All seems to be working properly now.