dilettante wrote:Windows users can download Microsoft's Pro Photo Tools 2
Having started this hare, I'm very pleased to see that you have found a good solution

I had been doing a little research too and came across this tool: http://www.sno.phy.queensu.ca/~phil/exiftool/ It's a very comprehensive tool for modifying any EXIF data (and a lot of other things as well) but is 'clunky' to use, since it needs to be driven from the command line. It does, however, provide a solution for MAC OS X users (and LINUX).
For WINDOWS, follow the instructions to place the file exiftool.exe in the Windows directory and then press the 'Start' button and select 'Run...'. If you then type in the box: exiftool -a -gps:all= DRIVE:\PATH\ FILE.jpg , where DRIVE is usually C, PATH represents the full path to your file and FILE is your photo file, ALL GPS info will be removed. There are some caveats associated with using the command line, as the PATH cannot contain spaces, so directories like 'Documents and Settings' have to be expressed in their DOS equivalent names. I may try to write a routine to automate this operation and will post here if successful.
Mike