So far, got it down to this version. Not sure what the best way to return the info is.

 Code:
getDisplays()

Function getDisplays()
   $KEY_DISPLAY="HKLM\SYSTEM\CurrentControlSet\Enum\Display"
   $iIndexPri=0
   $sMonitor=EnumKey($KEY_DISPLAY,$iIndexPri)
   While Not @ERROR
      $sMonitor=$KEY_DISPLAY+"\"+$sMonitor
      $iIndexSub=0
      $sDevice=EnumKey($sMonitor,$iIndexSub)
      while Not @ERROR
         $sDevice=$sMonitor+"\"+$sDevice
         If KeyExist($sDevice+"\Control")
            If Instr(ReadValue($sDevice,"HardwareID"),"Monitor\")=1
               $sEDID = ReadValue($sDevice+"\Device Parameters","EDID")
               If Len($sEDID) AND SubStr($sEDID,1,16)="00ffffffffffff00"
                  "Monitor "+(1+$iIndexSub) ?
                  "------------------------------" ?
                  For $iOffset=54 To 108 Step 18
                     $sBlock=SubStr($sEDID,$iOffset*2+1,18*2)
                     Select
                     Case Left($sBlock,8)="000000fc"
                        "                 Model: "
                        Bin2Str(SubStr($sBlock,9)) ?
                     Case Left($sBlock,8)="000000fe"
                        "            Other info: "
                        Bin2Str(SubStr($sBlock,9)) ?
                     Case Left($sBlock,8)="000000ff"
                        "EDID 1.3 Serial number: "
                        Bin2Str(SubStr($sBlock,9)) ?
                     EndSelect
                  Next
                  "EDID 1.2 Serial number: "+Execute("Exit &"+SubStr($sEDID,(&1C+1)*2-1,8)) ?
                  @CRLF+@CRLF
               EndIf
            EndIf
         EndIf
         $iIndexSub=$iIndexSub+1
         $sDevice=EnumKey($sMonitor,$iIndexSub)
      Loop
      $iIndexPri=$iIndexPri+1
      $sMonitor=EnumKey($KEY_DISPLAY,$iIndexPri)
   Loop
EndFunction

get $

Exit 0

Function Bin2Str($s)
   Dim $c
   While $s
      $c=Execute("Exit &"+Left($s,2))
      ; Truncate string at CR
      If $c=10 Exit 0 EndIf
      iF $c $Bin2Str=$Bin2Str+Chr($c) EndIf
      $s=SubStr($s,3)
   Loop
   Exit 0
EndFunction