Hi Fshng - Try this: Drop your pushpin, then hover the point of your mouse arrow over the base of the pin.
Click 'CTRL+ALT+C' - this will copy the Lat/Lon....then simply 'CTRL +V' to populate the info window on the pin.
Now - that said....in S&T 2013 - all you'll have to really do is enter the pushpin name...because when you export a GPX file in 2013 - it will include the Lat/Lon automatically.
Keith O'Brien