Possible Duplicate:
Is there a way to set my current location manually on Windows 8?
Is it possible to spoof a location in Windows 8. The motivation is for testing some Windows 8 location querying software.
Possible Duplicate:
Is there a way to set my current location manually on Windows 8?
Is it possible to spoof a location in Windows 8. The motivation is for testing some Windows 8 location querying software.
EDIT
Since you added that it is a web app, the only way would be using anything that modifies your public IP address:
OLD ANSWER
You can do that with visual studio:
Source: mvark.blogspot.it