I had the same problem until I uninstalled the Google Desktop program.
I am running 2003 wit service pack 2.

"acss" wrote in message
...
I updated my Outlook 2003 with current service pack and afterwards, when I
am
trying to open e-mail messages that are sent as attachments, I cannot do
it.
Other type of files in attachment can be opened but not message files.
What
could this be?