Tiny,

I, too, have a Garmin GPS Map 60CSx. When I purchased the GPS, I also picked up the proprietary Garmin mapping "Topo" software for the entire US, for about $100. This was almost two years ago, to put things into a time perspective, and I have no idea whether they might have made improvements to their data since then.

Up until that time, I had been using a Garmin Etrex Legend, and used National Geographic "Topo!" mapping data (for New England) and software to load trail data and waypoints to the Legend. I had been very happy with the National Geographic map data, as it at least appeared to be scanned USGS topo maps, so I had the USGS map detail and accuracy that I had been used to, and when I set waypoints and downloaded them to my Legend, they appeared to be very accurate.

The advantage to the the Garmin mapping software is that I can both use it on my PC, set waypoints, trail data, etc., and down load both my data AND the Garmin maps to my GPS. What I am dissatisfied with is that the Garmin map data does not appear to be as detailed as the National Geographic map data (USGS quad scans) that I was accustomed to. I must admit that for most of my backpacking needs (e.g., trails, elevation lines, streams), the Garmin data is good. I also note that I only have their US data, and I haven't seen what their

So, what I would recommend is that you go to the Garmin site and see if their level of map detail is acceptable. They also at least used to have more detailed data for national parks. If so, their map software might do it for you. Otherwise, you might want to look at other mapping software (e.g., National Geographic, Expertgps that Rootball mentioned) that at least "talks" to Garmin, and use that for downloading waypoints and trail data to your GPS.

Hope this helps,

Paul