In Windows Vista, the execute button has disappeared and you have to look for in All Programs => Accessories or use the abbreviated keyboard Windows + R.
To this button réaparraitre follow the steps below:
Right click on the icon in the Start Menu => Properties
To view the system properties you can go through the Control Panel and click System but this is still quite long, because you can access them without a single click!
For this you must press the Windows key (the one with a flag) and the pause button located in general above the keypad simultaneously.
He will appear at the System Properties window like you would see by going through the Control Panel.