Question: When working with two or more Windows program open, how can you tell which window is the active window? How can you make another window the active window?
Answer: The title bar on the top of the active wndow is a different colour from the others and the corresponding button on the windows task bar is highlighted. To switch to a different window smply click the appropriate button on the taskbar or use windowkey-tab to cycle through them.
This article written by Stephen Chapman, Felgall Pty Ltd.