I'd like to use Gtk2Hs under Windows Vista. I've installed the correct version of ghc and the newest Gtk2Hs from the respective homepages. My problem is that I am unable to extend the path in which ghc(i) looks for additional packages: Gtk2Hs is installed in c:\program files\Gtk2hs and I tried

  :set -i"C:\\program\ files\\gtk2hs"
  ghci -i ...

and many, many different combinations, i.e substituting backslashes with normal ones, installing in different directories, etc... Unfortunatly I haven't found any solution; I'd be very happy if someone could resolve this  problem :-)