This?
SELECT N.clientid, C.lname, M.MaxDate AS NoteDate, N.note
FROM (tblclients AS C INNER JOIN tblnotes AS N ON C.clientid=N.clientid) INNER JOIN [SELECT clientid, Max(notedate) AS MaxDate FROM tblnotes GROUP BY clientid ] AS M ON (N.clientid=M.clientid) AND (N.notedate=M.MaxDate);