Bob
I don't know is the straight answer.
This (well-intentioned but somewhat annoying) box
appears because of one of Outlook's security patches
to stop viruses from causing havoc.
It is possible to overcome one of Outlook's security
features (namely to allow the opening of so-called
dangerous attachments) by editing the registry
(see
www.slipstick.com for details). Whether, by
extension, it's possible to suppress this confirmation
box, I don't know.
There is a utility that comes on the Office CD that
allows you to self-certify your vba code within
Outlook itself. The intention is to suppress the
Outlook opening dialog to enable/disable macros.
It'd be nice if this utility would also suppress the
confirmation box and would certify any vba
code you write within any Office application.
(Do you think Microsoft are listening? Let's hope!)
Probably best to post this question on a specialised
Outlook newsgroup. If you find out the answer,
please let me know. I'll be watching this thread...
Sorry I don't know
Regards.
Geoff