Macro to auto-save and auto-close workbooks after a certain time?

Hello!

We have student workbooks to document training. Unfortunately, both students and instructors often forget to close the workbooks when finished, thereby making them inaccessible to anyone else on the network.

Could a macro perhaps detect that there has been no keyboard activity for 10 minutes, and auto-execute a save and close?

Thanks in anticipation!

http://excelribbon.tips.net/T008192_...nactivity.html

The attached is a complete project based on another website.