Place Outlook in Offline mode via File-> Work Offline.
Restart Outlook and you should be able to delete it.
For other solutions see;
http:/www.howto-outlook.com/faq/messagestuckinoutbox.htm
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Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
Outlook FAQ, HowTo, Downloads, Add-Ins and more
http://www.msoutlook.info/
Real World Questions, Real World Answers
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"bill" <(E-Mail Removed)> wrote in message
news:17DAB19E-95CC-4E55-98CA-(E-Mail Removed)...
> I have a partly transmitted outgoing email message in outlook which
> includes
> eight photo attachments which appears to have jammed. How do I clear it?