I have something you might could use at home - using an ini, but given the critera right now, and if you know that this will only occur once or twice you could try this (just something simple):
Note- This is not tested in anyway more then with eyesight, and I am not wearing my glasses ;\)
 Code:
If INGROUP("Group_Dir1","Group_Dir3",1) 
 use X: "\\server\root"
Else
 Select 
  case INGROUP("Group_Dir1") 
   use x: "\\server\dir1"
  case INGROUP("Group_Dir2") 
   use x: "\\server\dir2"
  case 1
   ;something default..
 EndSelect
EndIf


Looks like Glenn beat me to it ;\)

Edited by Björn (2007-07-09 02:53 PM)
Edit Reason: added warning-note