Cygwin shell is overriding my Windows shell

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http://serverfault.com – I'm not sure what I did, but I've somehow got Cygwin installed in such a way that even when I try to run an ordinary windows shell, Cygwin is interfering. I have batch scripts that I want to run in the default windows way that Cygwin complains about. I can't change them; I need to run them in the felaut shell. Is there any way to get my cmd shell back without completely uninstalling cygwin? I did try renaming cygwin1.dll to something else, and the shell seems to work just fine until foo.bat tries to run the exe. Then I get a complaint that cygwin1.dll has moved, so it looks like cygwin is bei (HowTos)