[mhouge]

Thanks for the replies.

I loaded Visual Build using the older .dll that you provided. The html message formats as expected in outlook 2003. When I include an attachment (.html or .txt) in Visual Build, however, it fails to be sent. This happens no matter if I send an html message or a plain text message. In other words, the file attachment functionality is not working in outlook 2003 with the older .dll file (version 5.2.0.0).

Edit: When I say "it fails to be sent" I mean the message body is sent, but without the attachment coming along for the ride.