Program Files\Gtk+\include\libglade-2.0;C:\Program Files\libxml2\libxml2-dev_2.7.7-1_win32\lib\pkgconfig

I got the install of GTK and everything worked:
http://ftp.gnome.org/pub/GNOME/binaries/win32/glade3/3.6/glade3-3.6.7-with-GTK+.exe

Microsoft Windows XP [Version 5.1.2600]

C:\Documents and Settings\Bot User>cabal update
Downloading the latest package list from hackage.haskell.org

Version:
C:\Documents and Settings\Bot User>ghc --version
The Glorious Glasgow Haskell Compilation System, version 6.12.3

C:\Documents and Settings\Bot User>cabal install gtk2hs-buildtools
Resolving dependencies...
Configuring gtk2hs-buildtools-0.12.0...
Preprocessing executables for gtk2hs-buildtools-0.12.0...
...
hs\gtk2hsC2hs-tmp\GenBind.o )
[41 of 41] Compiling Main             ( c2hs\toplevel\Main.hs, dist\build\gtk2hs
C2hs\gtk2hsC2hs-tmp\Main.o )
Linking dist\build\gtk2hsC2hs\gtk2hsC2hs.exe ...
Installing executable(s) in C:\Documents and Settings\Bot User\Application
Data\cabal\bin

Here is where it fails:

C:\Documents and Settings\Bot User>cabal install gtk
Resolving dependencies...
C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\cairo-0.12.03164\cairo-0.12.0\Gtk2HsSetup.hs:
25: warning: #warning Setup.hs is guessing the version of Cabal. If compilation
of Setup.hs fails use -DCABAL_VERSION_MINOR=x for Cabal version 1.x.0 when build
ing (prefixed by --ghc-option= when using the 'cabal' command)
[1 of 2] Compiling Gtk2HsSetup      ( C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\cairo-0
.12.03164\cairo-0.12.0\Gtk2HsSetup.hs, C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\cairo-
0.12.03164\cairo-0.12.0\dist\setup\Gtk2HsSetup.o )
[2 of 2] Compiling Main             ( C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\cairo-0
.12.03164\cairo-0.12.0\Setup.hs, C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\cairo-0.12.0
3164\cairo-0.12.0\dist\setup\Main.o )
Linking C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\cairo-0.12.03164\cairo-0.12.0\dist\se
tup\setup.exe ...
Configuring cairo-0.12.0...
setup.exe: Missing dependencies on foreign libraries:
* Missing C libraries: z, cairo
This problem can usually be solved by installing the system packages that
provide these libraries (you may need the "-dev" versions). If the libraries
are already installed but in a non-standard location then you can use the
flags --extra-include-dirs= and --extra-lib-dirs= to specify where they are.
C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\glib-0.12.03164\glib-0.12.0\Gtk2HsSetup.hs:25
: warning: #warning Setup.hs is guessing the version of Cabal. If compilation of
Setup.hs fails use -DCABAL_VERSION_MINOR=x for Cabal version 1.x.0 when buildin
g (prefixed by --ghc-option= when using the 'cabal' command)
[1 of 2] Compiling Gtk2HsSetup      ( C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\glib-0.
12.03164\glib-0.12.0\Gtk2HsSetup.hs, C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\glib-0.1
2.03164\glib-0.12.0\dist\setup\Gtk2HsSetup.o )
[2 of 2] Compiling Main             ( C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\glib-0.
12.03164\glib-0.12.0\Setup.hs, C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\glib-0.12.0316
4\glib-0.12.0\dist\setup\Main.o )
Linking C:\DOCUME~1\BOTBER~1\LOCALS~1\Temp\glib-0.12.03164\glib-0.12.0\dist\setu
p\setup.exe ...
Configuring glib-0.12.0...
setup.exe: Missing dependencies on foreign libraries:
* Missing C libraries: gobject-2.0, glib-2.0, intl
This problem can usually be solved by installing the system packages that
provide these libraries (you may need the "-dev" versions). If the libraries
are already installed but in a non-standard location then you can use the
flags --extra-include-dirs= and --extra-lib-dirs= to specify where they are.
cabal: Error: some packages failed to install:
cairo-0.12.0 failed during the configure step. The exception was:
ExitFailure 1
gio-0.12.0 depends on glib-0.12.0 which failed to install.
glib-0.12.0 failed during the configure step. The exception was:
ExitFailure 1
gtk-0.12.0 depends on glib-0.12.0 which failed to install.
pango-0.12.0 depends on glib-0.12.0 which failed to install.

C:\Documents and Settings\Bot User>