Question about e-mailing attachments

[John]

I recently upgraded from Outlook 2002 to Outlook 2003. Now, when I
send an e-mail with a picture document attached to it, Outlook seems to
be killing the file. It ends up in the receiving person's e-mail as a
..dat file with no picture attached. Do you know what it is doing and
how to disable this function?

Thanks,

John