I have many computers in my office from Dell. One of the computers is a Dell INSPIRON D531 which came with Vista installed. I have many other Dell laptops and desktops which came with Windows 7 ultimate and some of which are scrap now, but I do have the DVDs of the OS.
Can I use the Windows 7 DVD which came with other Dell on that INSPIRON to upgrade Vista?
Will it ask for a key or activation? I want to save my time and start to upgrade Vista to Windows 7 once I am sure. Any suggestions?