Sorry if this is posted somewhere else. I just got stuck because I turned off fullscreen mode to run it in a window, but for some reason I can no longer control it with the mouse. Can I control it with the keyboard or do I have to shut it down? (It's not the mouse because it works in other windows.

Never mind, I just shut it down. Not sure why it wouldn't run properly in a window, but I know not to try that again!

OK, I had re-sized the window as mine was too tiny, I think that was why. When I went back, it still ran in the window, but worked. Still too small for me though, so will just run it fullscreen. I love answering my own questions. LOL

I don't know much about keyboard controls, but I DO know that yo can use the number pad to move around the screen. I've found SOOO many collectables this way! Just be sure the number lock is off.

Theoretically you shouldn't be able to resize the window; it's set at 800 x 600. However, there's a bug in some versions of Windows that sometimes lets you change it, with the result you've found - the mouse doesn't work properly. Closing the game and reopening it will return the window to the proper size.

It is possible to move about the screen using keyboard controls, but you still need the mouse to do things like picking up a peep. I don't have the game installed on this machine, but if you go to the Menu screen, then click on Help I think there's a description of the keyboard shortcuts.