MSVC++ Solution missing

I just installed ( or extracted rather ) OpenCV-2.3.1-win-superpack.exe and there is no _make folder present. I searched and there are no Visual Stutio .sln files present either. On pg. 9 under "Windows" the text says to go to .../opencv/_make and open the MSVC++ solution. I seem to be missing something. Please help.
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