Thanks Tim, after reading your link and its links I basically found out it's not possible... then I searched on Google and found this:
http://www.outlook4team.com/prredirect.asp?hp=http://www.express-soft.com/mailmate/clickyes.htmlπ=136&pr_b=0
QUOTE "Express ClickYes is a tiny program that sits in the System Tray and clicks the Yes button on behalf of you, when Outlook's Security Guard opens prompt dialog saying that a program is trying to send an email with Outlook or access its address book"
It's small, free, but I have yet to try it...
Paul