Hi Odille,
When you setup your location Paris is the Stellarium default location.
Refer to the attached picture, then...
Type in the name of your location in the same place I have typed in Kyneton.
Type in the Latitude, longitude and altitude of your location.
Select the country by clicking on the little down arrow and finding Australia.
Check the 'Use as Default'
Click on 'Add to List'
Your new location should now come up as your default.
You can add as many locations as you like, but only one can be the default.
Hope this helps.
Cheers
Chris