While many people poo-poo the site, have a look at the get safe online site – it does do the job that people are asking for. John and Peter raised some interesting points. Some customers just do not believe that security is a threat they have to pay attention to, or that it requires real management to...
The team I am part of is a fun little group and we made a roup of videos which discuss our technology. Each video is just a few minutes long, but might give you the overview you need before or after the meetings. The videos we have are: http://www.microsoft.com/uk/partner/blog/demo01-gettingemailanywhere...