Dear kismac/gps enthusiasts: I finally have a working GPS on my iBook, and it was quite simple ... after some false starts*. Now I would like to install the map. I have a very nice government of Canada map for my area, at pretty high resolution. I am able to import it as an image, and save it as a "kismap" but I am not sure how to calibrate it. How do I tell kismac where the map starts and stops? ...r * For those interested in the false starts, I first purchased a Delorme Tripmate, which clearly states that it is not compatible with Mac, but I thought... that's just to discourage casual users! I bet I can find the usb to serial drivers for this thing... Not a chance. For whatever reason, there are no drivers for it. On the recommendation of several people here, I then chose the Deluo USB model. It is available online from a variety of vendors, I got mine from "Computer Geeks", a mail order company with a web site at http://www.computergeeks.com. It was $89USD. It comes with OS X drivers on the CD but those didn't work for me. I was able to download the latest drivers from the web, however, and those worked well. My USB GPS is "visible" to all Mac GPS software, including KISMAC, as a serial device.