Thanks for the help! I also have a basic Garmin Etrex. I bought it for biking and hiking, mostly to see how fast I had gone and how far rather than to map out routes. I usually have where I am going fairly well planned out before I go, so it is all I need. Interestingly enough, the GPS works on planes when help up right against the window - gives the correct altitude and ground speed.

On the same subject (kind of): Where do you think that GPS technology is headed? My feeling is that within 5 years or so, everyone (or everyone who has a cell phone now) will have something like a blackberry that incorporates GPS and mapping technology along with a phone and mini-computer.