I played the trial version of this and love it, but when I quit and go back to the desktop, everything is suddenly much bigger. The icons, the wallpaper, the works! My husband is the computer expert and he gets mad when this happens. Is there a way to prevent this?

The desktop should reset itself when the game terminates, unfortunately it doesn't always work out that way.

You can readjust the settings by right clicking the desktop and selecting Properties (or Personalize under Vista and above) - locate your desktop resolution settings and change them back to their original values manually.