This is just a very quick one.  I found this interesting little tool on the web which is almost customer safe, but explains the value of a server.

Download, customise the powerpoints and use when ever you are at an exhibition etc. This is the "Information Worker’s Guide to the Windows SBS Computer Network" and according to the site performs the following:

Through a series of interlinked PowerPoint shows or "modules," the "Information Worker's Guide to the Windows SBS Computer Network" provides users with a high-level overview of the Windows SBS network. As they progress through the modules, users learn how Windows SBS can help them keep company data secure, improve personal and team productivity, and communicate more effectively with customers and co-workers. Along the way, they are introduced to Windows SBS features and functionality and to the basic scenarios of working remotely and staying connected.

http://www.microsoft.com/downloads/details.aspx?FamilyID=d566b19a-63c9-48d4-8add-ed7f99c9024c&displaylang=en

ttfn

David