Hi Shaun,
I don't know what version of Stellarium you're using but the following works for 0.10.0 beta:
1. Click on the Location icon (top icon) on the left hand side side of the screen. This will bring up a window with a map of the world and a lot of cities listed on the right hand side.
2. Click on the map roughly where Kellerberrin is in WA. This will change the
Name/City: field to
New location.
3. Replace
New location with
Kellerberrin.
4. Select
Ausrtalia in the
Country field.
Your
Lat. and
Long. were taken from your Profile. (Your Profile doesn't show seconds)
5. Change the
Latitude: field to
S 31° 37'
6. Change the
Longitude: field to
E 117° 42'
7. If you know your Altitude, change the
Altitude: field to show your Altitude in meters.
8. Click on the
Use as default box.
9. Click on the
Add to list button to save your new location.
10. And lastly! Enjoy using Stellarium.
Note: If you make a mistake or need to edit your location settings, it is better to delete your location and start again.
I was able to give you a step by step instruction because I changed my own settings from the local airport to my exact location as I typed the instructions above.
I hope this has helped you.
Cheers,
Henry.