You need to have VSX Integrated mode or isolated mode. Not sure about this last one. We are already waiting for a PLK from Microsoft so maybe it will not load at all
I un-installed the VSX because I could not see the ability to create a C++ application as one of my choices .. I downloaded and installed the Visual Xpress 2008 C++ ( free ) version. I was able to get to the forms editor in the C++ IDE .. I then went back and installed the Redistributable VS 2008 VSX .. unfortunitly, in VS 2008 I could not create a C++ application or get to the forms editor