- check out using env vars in Path settings in registry, or make relative
  paths (I checked, you can't use env vars in the path or loadlib
  settings... arg, this should be implemented)


- Another detail is that help browser can't open files if there is a space in
  the path or filename.  I think its a problem of Tcl escaping.  The problem
  is in u_main.tk in menu_openhtml on Win32 with rundll32 dll.url.FileHandler


- get Windows Makefiles for Gem