Thanks folks for all the comments.

brbo: Here's what I found earlier about maps for Guatemala. I think the download is part of the paid expertgps service. It's not included in the free version: Download Guatemala Map Software for Your GPS About Garmin topo, that is a purchase map, I believe.

I may have to download the 30 day expert gps trial, and see for myself what the level of map detail it has. Locally I use OSM for trails and woods roads, and for road riding. I use it to load tracks from my computer to my gps for navigation assistance. OSM is fairly good where I live, partially because riders here contribute to the data base of OSM. It's also very good in Copper Canyon, and in the parts of Mexico I've ridden. Maybe it's perfectly fine in Guatemala. I'm going there, and I'll find out first hand.

I do have OSM, but for some areas (Guatemala for one) there is not much mapping beyond the main roads, when comparing to google earth or other on line sites. I'm planning to use a sd card, but haven't explored that with this "new to me" gps unit.

Walkabout: I do know about the free version. There is also a trial version of expertgps. Thanks for the here.com link, I didn't know about that one. With google earth and the long discussion you linked, I have read through that and was hopeful, and found some of the routing/transfer information to be very helpful. However, I still can't transfer map images. I have google earth vs7, a tough one to find the cache files on. I'm not a computer techie, so the depth of the search required to find the cache files was exceeding my abilities. Again, grrrrr - technology always changing.

This stuff is just a tool for me, not an occupation or passion. No matter what the motorcycle, I can always operate it. It has a handlebar, two wheels, clutch on the handlebar, two brakes.... digital mapping technology has no continuity to it between programs, the way something solid like a moto or a paper map does.

These technology changes are such a pia. I have done a LOT of routing with mapping software and gps, using Streets & Trips and a 2700 series street pilot gps. I've used several other programs, including gpsbabal. I became very good with these programs, from my Iron Butt type rally experience. S&T is no longer, and my 2700 series gps died, and also doesn't have a sd chip. You have to load maps to the memory. Don't get me going on Basecamp. I still haven't mastered it's routing function to the level I had with S&T. I was never a fan of Mapsource, with its clunky routing method. With that, I now am way back at step 1, knowing what I want and can do, but not knowing what to use.