Hi Bucky, I just got the Holux GM-270 as well and like Jake said, you're going to LOVE it! I was thinking of buying the Ultra version but people on
www.gpspassion were saying that it has some kind of a lag issue when updating the speedometer, and that it is really more suited to folks doing field research. So I just ended up getting the regular unit and it appears to be working amazingly with Mapopolis. I orderd the external antenna with it as well but I don't think I'll be using that too much as the Holux can get a fix on it's own in just a few seconds. Simply amazing!
Don't bother installing the GSPViewer program that comes with it as I've heard it is crap. Instead, load up these utils...
Leadtek Winfast Navigator(CE Monitor):
http://www.leadtek.com.tw/www/Web_Le....0%20Setup.zip
The util will let you input settings to your Holux. Use NMEA, COM port 5, and 4800 Bps. That should get you going.
After you get a fix, try out this program...
http://www.visualgps.net/VisualGPSce/default.htm
Have fun, and remember to keep your eyes on the road! :crooked: