WinTypes and WinProcs

In D2, I am trying to evaluate a few Components which were built with
WinTypes and WinProcs instead of Windows.  The references to these two
units is in the .dcu.  When I try to install them, Delphi complains
during the link that it can't find WinTypes.pas.  I believe I have all
my Aliases correct, WinTypes=Windows;WinProcs=Windows, but is there
something I have to do (or correct) so that Delphi knows of these two
units during the link of complib.dcl

Mark Bracey