First off, I have a PowerBook G3 Series which has no built-in serial port. The product doesnt include a USB adapter, but you can buy one from the Delorme website .... They say it will be available in "late December," but it is now December 30 and theyre still saying that on their website. I ended up buying a couple different adapters off the web (one ... which doesnt say so but did include Mac drivers, and the Keyspan USB PDA Adapter), but neither one provides power to the GPS so you have to put 4 AAA batteries into the unit for it to work.

The Street Atlas software works okay. Its user interface is mostly standard -- the menus are set up like you would expect, but it has some pretty odd "features:" you have to "Command-click" to get the pop-up menu on the map, for instance (instead of "Control-clicking" as is standard in Macintosh OS 9). Its location search features are okay, but they rely heavily on knowing a zip code and some are [non-obviously] sensitive to the area of the map being viewed and even the current magnification level.

Integration between the software and the GPS is okay. Ive been using it a while and still dont understand how the connection is maintained between the two. It seems that whenever you check the GPS status, it re-initializes itself. The software shows your current position and direction right on the map. The logging features are pretty poor, however -- all you can do is record your route then play it back at normal speed (yes, you can actually watch where you went in the same amount of time it took to do it the first time) or at 10 or 50 times normal speed. There appears to be no way to display your whole track, so you cant make your own maps of trails very easily.

The worst news of all is this the _only_ GPS solution I can find for the Macintosh. If you think you still need it, be sure to read through the help files and manual when you get it because of the quirks in the interface.