http://bugs.winehq.org/show_bug.cgi?id=19755
--- Comment #3 from Dan Kegel dank@kegel.com 2009-08-17 21:52:11 --- Aha. Looks like c:\watcom\binw\wcc.exe is not installed by default, so you have to select 'full installation' in the installer.
Austin, we might need to remove silent installer support unless it does a full install :-(