Pascal,
in your step 4, instead of building by opening the solution in VS2005, you should run 2 batch files which come with the EntLib.
First, run BuildLibrary.bat, then CopyAssemblies.bat (both files are to be found in the same folder as the solution files). Once that's done, you can find the most current assemblies in the bin directory.
"Small is the number of them that see with their own eyes, and feel with their own hearts" Albert Einstein