It's been years since I researched this topic, being I've had access to a Windows box for a while. That will change soon, and I'm losing access to GSAK. What's a person to do if there are no Microsoft Windows, just a covey of Mac OS 10 boxes, in one's home? How do I manage my GPX files and cache notes? I'm a very long time user of MacGPS Pro -- since I bought my first GPS II Plus, and it can handle some basics like displaying GPX files and uploading / downloading to my GPS units, but it doesn't handle filters, etc. Ideas? (Besides buying yet another Operating System for my computer?) I don't want to buy a Windows OS, given I'm just extracting myself from that world. Jon