Execute your UPDATE
statement from a DAO.Database
object variable. Afterward you can base your user notice on the variable's RecordsAffected
property.
Here is a simple example, verified with Access 2007.
Dim db As DAO.Database
Dim strUpdate As String
strUpdate = "UPDATE tblFoo" & vbCrLf & _
"SET some_text = 'bar'" & vbCrLf & _
"WHERE id = 7;"
Debug.Print strUpdate
Set db = CurrentDb
db.Execute strUpdate, dbFailOnError
MsgBox db.RecordsAffected & " records affected"
Set db = Nothing