How to make a selection in a map (mxd) from a stand-alone python script?

Discussion created by ufeliciano on Feb 1, 2012
Latest reply on Feb 2, 2012 by jbarrette-esristaff
I have a map document created in ArcGIS 10 that is access daily by our users.  Is there any way to run a selection (by location or attribute) from a stand alone script and save the mxd so users see the updated selection when they open the map document?  We want to run the script every night.