Windows 7 Scanner Message "Which Device Do You Want To Use"

We just upgraded our office desktop from Windows XP and Windows 7. We used to scan driver's license IDs into our accounting program on XP. It worked pretty smoothly. But now on Windows 7 (the same hardware, except the desktop itself) when someone tries to scan a document we get the following window (see attached) that says,"Which device do you want to use?"With only one scanner in the list. That is kind of stupid, isn't it... Plus this window doesn't just popup, it becomes hidden behind other windows and the only way to tell that it's there is by its flashing icon on the taskbar, which is very confusing for most of our office workers.how to make this window not show up and go directly into that scanner (like it used to work on XP)?