Est. Read Time: ~Keurig Brew-Time
Or how about this?
Or maybe this one?
If so, you might find this link interesting. It shows the process of upgrading a system from the first windows operating system all the way to Windows 7.
Warning, if you are a dyed-in-the-wool believer that Microsoft is the evil empire, you may find yourself spewing profanities at your browser and asking no one in particular how Windows can survive for some twenty plus years. For the rest, take it as a reminder (or history lesson) of the evolution of a tool that a lot of us have used for a long long time.