I was wondering if anyone knows how to make the screen bigger again if you fold it down using the Windows key.
For example, if I want to look at the map or clue book for the game while I'm playing and fold the screen down when I bring it back up again the screen is really small and I see no way to get it back to the original size again.

Try pressing ALT + Tab, that will minimize and maximize the screen.

alt+enter will generally maximize the screen.

Thanks for the replies!!!!
It was ALT ENTER that enlarged the screen back.

Yeah, that will do it. If you find that you are switching to look at the cluebook or map a lot, you might want to try running the game in a window and just make the window bigger. You can do that in the configuration file located in the install directory; it should be named something like dosboxmm3.conf (for mm3 in this example). Find a line called "windowresolution=original" and change it to "windowresolution=1280x1024" or "windowresolution=1024x768" and that will make the window bigger.

To start the game in a window instead of fullscreen, find the line that says "fullscreen=true" and change it to "fuillscreen=false".