Matt.Wilkie writes: > The DEMs now in question were originally acquired from the public domain. What exactly do you mean by that? It is rather unlikely that any such data is truly in the public domain. -- John Hasler This posting is in the public domain. email@example.com Do with it what you will. Dancing Horse Hill Make money from it if you can; I don't mind. Elmwood, Wisconsin Do not send email advertisements to this address.