[snowyskiesau]

For those that don't have a spreadsheet program available, here's a browser option.

Just unzip the attached file, it will create a file called lat_conv.html. Load it into your web browser via the
File -> Load File option.
No need to have any sort of web server running.

It's javascript so should run in any browser (I've tested it with Firefox and IE)
It will convert from//to decimal notation and also gives the lat/long of the point on earth furthest from you, not sure how useful this is.

[Perhaps Mike could include this as an option on the IIS site?]