In looking for a palatable way to add configuration file support to some components I’m writing I looked at a number of articles on the topic, all of which discussed some interesting aspect of the configuration. This article, however, covers it all. It is a little long, but well organized so you can find just the parts you need. If you ever engage in creating a configuration section for your .NET 2.0+ app, this is the reference.
That being said, here’s a totally different approach to configuration using the XML Serializer. You would lose some validation capabilities, but you gain virtually unlimited flexibility in your object model and you can write whatever simple configuration model you like without worrying about the configuration namespace classes.