Windows 7 :
NOTE: If you are doing this is while logged in as standard user instead of an administrator, then you will need to provide the administrator's password before the program will run as administrator.
Update : (2015-07-05)
In Windows 8, you have to right-click devenv.exe and select "Troubleshoot compatibility".
select "Troubleshoot program"
check "The program requires additional permissions" click "Next", click "Test the program..."
wait for the program to launch
click "Next"
select "Yes, save these settings for this program"
click "Close"