Would you please expand on your description a bit?
When you say mapped drives, do you mean across the WAN from the satellite offices?
Second question – If you were to open My Computer on one of the systems that maps drives remotely, is the icon for the mapped drive gone? Or does it just have the red X for not connected? If the latter case, just have the user double-click to “revive” the connection and open the folder for viewing – something that applications seem to have trouble with in general.
If the former case (icon missing), I don’t know.
Would you please provide us with some more detail as to the structure of your network?