I building myself a small reference project using as much of Enterprise
Library version 2 / .NET 2 (EL2) as I can.  Generally finding it easier
than earlier versions.

Using the security application block I am in the process of building a
custom authorization provider derived from AuthorizationProvider.  In
the example code with EL2 there is an example of this I have more or
less copied, cannot get it to compile because ConfigurationElementType
"could not be found".  Can anyone tell me which namespace or EL block
this is in that I need to reference.  Searched every where I know for
the answer to no avail.
TIA
Adrian