H
The sample you're trying to run doesn't work right away if you copy and paste all the code. The problem you're getting is because you have to declare the section 'controller.mapping' in the web.config, something that's not shown in the example
You would do this by inserting this into your web.confi
<configSections><section name="controller.mapping" type="UrlMap,WebFrontController"/></configSections
If you get this working, you'll have to correct the entries by replacing the /patterns/frontc/3/ part with the virtual directory that you've created for your site
I'll recomend you take a look at
http://msdn.microsoft.com/asp.net/using/migrating/jspmig/resources/code/ and then Front Controller Demo for a complete working implementation of the pattern
Alfred