12-May-2014: Updated for Windows 8
I will talk quickly about running apps as administrator.
This article assumes that you have the admin rights and you know exactly why you want to do this.
Run app once as admin (Windows 7 and 8)
Right click the app name on start menu or desktop, and click Run as administrator. Or, type the name in start menu search, and press Shift + Enter
Run one App always as admin (Windows 7 and 8)
If you want to always run a program as administrator, right click the program name, click Properties, go to Compatibility tab, and in the bottom down, click on Run this program as administrator. After this, every time you run that app, it will be as administrator.
Run everything as admin (Windows 7 only)
If you always want to run everything as administrator, and running Windows 7, simply turn off the User Account Access (UAC) by dragging the slider all the way down and restart. (Hit start button and start typing User Account Access, you will find it.)
Run everything as admin (Windows 8 and 8.1 )
If you are running Windows 8, turning off the UAC will not work. You will have to edit a Registry entry.
Open regedit and navigate to:
Edit ConsentPromptBehaviorAdmin to set it to 0.
Also set EnableUIADesktopToggle to 0 in the same path.
No restart is needed.
Enjoy the administratorship !