Unity Application Block is part of entLib 4.1, unfortunately its configuration section is not editable via entLib configuration editor. The editor probably
will be updated in the next version of entLib 5.0, till then the best that we can do is add intelliSense to the configuration file.
First download the xsd file of Unity from http://www.codeplex.com/unitycontributions/SourceControl/PatchList.aspx and copy that
to c:\Program Files\Microsoft Visual Studio 9.0\Xml\Schemas [for VS 2008].
After that go to your configuration file, open it for edit, open the properties, go to schemas and open the editor, check the use box for unoty.xsd
After that you will be able to auto complete the unit section
The bad news is that you have to do this operation for every new configuration file you use.