Maybe I don't understand exactly what you need to do, but why can't you do something like this

code:
  
For Each $level in $levels ;Split results 
    If InGroup ("@DOMAIN\"+$level)= 1 ;Check for group membership
         If KeyExist($regkey) ;Check if printer already connected
             ? "Printer already connected"
         Else
             $printers=ReadProfileString('@CURDIR\printers.ini',$level,'Printers') 
             $printers=Split($printers,',')
             For Each $printer in $printers
                  $nul=AddPrinterConnection("\\$PRTserver\"+$printer)
              Next
         EndIf
    Else            
         ; Psuedocode
         if user is connected to this group's printer (from ini file)
               remove it
         endif
    Endif
Next
_________________________
Eric