An Attachment field has subfields of FileDate, FileName, FileType.
In the report's RecordSource query, drag FileName to the query grid, apply criteria of Not Is Null.
Like this:
SELECT *, fieldname.FileName
FROM tablename
WHERE Not fieldname.FileName Is Null;
How to attach file: http://www.accessforums.net/showthread.php?t=70301 To provide db: copy, remove confidential data, run compact & repair, zip w/Windows Compression.