HGL with GHC in Win32

Can anyone help? I would like to run a program using the Haskell Graphics Library under GHC on Windows. HGL is listed as a package (when ghc is asked about its packages) but not actually distributed as a package with ghc-5.02.3. On trying to remedy this, - I am able to compile HGL by hand on windows, but on executing the HelloWorld.hs the program hangs: nothing happens. - HGL doesn't appear to compile on unix (solaris). I'd be grateful for any feedback. Thanks very much, Simon Thompson