ShellExecute question

Hi all ~

I print PDFs in one of my apps like this:

if ( ShellExecute( 0, 'print', PChar( wcbfdf), nil, nil, SW_SHOWDEFAULT ) < 33 )
then
   MessageDialog( 'Error opening file: ' + wcbfdf + #13 + '(Possible cause: ' +
PROBLEM, mtError )


This, however, brings up the installed Acrobat Reader over top of my app window.

Is there a way to make Reader NOT show up?

TIA,
Kai