I'm not exactly sure what do you want to change and why?
Do you want to change position format or datum?
The co-ordinates (position) format that you set the receiver to use with Google Earth is in:
degrees minutes seconds.decimal seconds
The co-ordinates that you gave in your post appear to be
degrees minutes
so, you can use the same format as you have set now. Since your co-ordinates don't show anything smaller than a full minute, just enter zeros for the seconds.
If you want to change the datum than, it is important to know what datum your co-ordinates are in. Last time you set the datum (for Google) to WGS84. IS the datum you need now any different? What is it / how do you know? OK< datum is usually written right on the map. Is it your case?
If you want to change the datum, the selection is in the menu, right by the position format.
Andrew Kalinowski