Need to convert decimal format for lat/lon's into degrees, minutes and
seconds.  That is, I have latitudes like 37.138138  and longitude like
-80.544823.  I'd like them in a dd:mm:ss format.

Hallo glscott!

I think you are looking for a site like "Latitude, Longitude Format
Conversion" ( http://www.geology.enr.state.nc.us/gis/latlon.html ).
The Java applet there can convert from Decimal Degrees to Degrees,
Minutes, and Seconds and the other way around.

I hope this helps. If you require further assistance feel free to ask!

voyager-ga

Additional Resources:

The Calculator Homepage (where you can find links to scientific
calculators. Calc98 for example can do your conversions, too (on
windows or linux (under wine))
http://www.calculator.org/

Search Strategy:

latitude conversion
://www.google.com/search?sourceid=navclient&q=latitude+conversion

You guys are really quick!  Thanks for your help.

If you are after the mathematical equations to allow you to implement
this yourself as opposed to using a Java applet embedded in a web
page, you will find an explanation of the necessary algorithms at
http://academic.brooklyn.cuny.edu/geology/leveson/core/linksa/decimalconvert.html

Regards
iaint-ga

A nice little Macintosh program to do this can be found at
http://www.geocities.com/chimoosoft/latlon.html

http://www.rockware.com/catalog/pages/tralaine.html

or the free calculator at the site as well.