There is some code in our solution using some of the zip classes from J#. Caught me out in setting up a clean machine that J# is not available in the 2008 install, and must be downloaded seperately. Forum quote…
The reason for the same is the Visual J# Redistributable is not a part of Visual Studio 2008, unlike earlier versions of Visual Studio. You can go ahead and install Visual J# Redist (v2.0/or 2.0 Second Edition) on your machine.
You can download the redist from here - http://msdn2.microsoft.com/en-us/vjsharp/bb188598.aspx