I'm looking for specific details on the security vulnerabilities of
the Microsoft Outlook program - both Outlook and Outlook Express.

Well as I'm not sure which versions you wanted information on I'll
provide you with a link which should give you all of the information
you require for every version of MS Outlook.

Head over to: http://secunia.com/search/?search=microsoft+outlook

Then select the version of Outlook you're interested in.  You'll be
presented with a *lot* of information including charts, statistics,
history of vulnerabilites, full listing of vulnerabilites etc. etc.

Hopefully that should provide you with all of the information you need
(I use secunia on a regular basis and find the information accurate,
reliable and informative).

Hope this helps!

Thanks.  I'm actually not looking for a great amount of technical
details as much as an understanding of the basic issues for "talking
points" for discussions of the basic security vulnerabilities

Thanks for the web site link - I will definitely take a look at it.