[Haskell-beginners] How to Install Gtk2Hs on Windows?

I tried following the directions on http://jystic.com/2010/10/20/installing-gtk2hs-on-windows/, but when I run cabal install gtk, I get * Missing C libraries: z, cairo * Missing C libraries: gobject-2.0, glib-2.0, intl I seem to have everything asked for in the PATH. pkg-config reports that Gtk+ 2.16.2 is installed.