>Hi All,
>
>Using Excel automation I want to open an Excel Workbook if it is not already open. How to check for this?
>

You can loop through the open workbooks and see if one of them is the one you're interested in:

FOR EACH oWB in oXL.Workbooks
  IF oWB.Name == m.cFileName
     * Found it
  ENDIF
ENDFOR

I don't remember offhand whether the Name property is the right one and whether it includes a path, but you can figure that out from Help.

Tamar