Brandon,
Did you already download the Examples and the Learning SetupBuilder Part I manual? There are quite a few good examples that demonstrate this
http://www.lindersoft.com/forums/showthread.php?t=24376
It should look like this:
If %_SB_DIALOGID% Equals "$SHARED$" Then
If %DATAPATH%\AAS2.EXE File or Folder doesn't exist Then
Display Message Box "The file or folder chosen is the incorrect FPA sha..." -- "Incorrect Shared Folder"
Cycle
End
End
Friedrich