How I can open a report (in Print Preview mode and also print direct) in an MS Access database?

In the next small example I'll demonstrate how you can call the report in MS Access:

var
Access: Variant;
begin
// open the Access application
  try
    Access := GetActiveOleObject('Access.Application');
  except
    Access := CreateOleObject('Access.Application');
  end;
  Access.Visible := True;

// open the database
//The second parameter specifies whether you want to open the
database in Exclusive mode
  Access.OpenCurrentDatabase('C:\My Documents\Books.mdb', True);

// open the report
{The value for the second parameter should be one of
acViewDesign, acViewNormal, or acViewPreview. acViewNormal, which is the default, prints the report immediately. If you are not using the type library, you can define these values like this:

  const
    acViewNormal = $00000000;
    acViewDesign = $00000001;
    acViewPreview = $00000002;

The third parameter is for the name of a query in the current
database. The fourth parameter is for a SQL WHERE clause - the string must be valid SQL, minus the WHERE.}

  Access.DoCmd.OpenReport('Titles by Author', acViewPreview,
                           EmptyParam, EmptyParam);

<...>
// close the database
  Access.CloseCurrentDatabase;

// close the Access application
  {const
    acQuitPrompt = $00000000;
    acQuitSaveAll = $00000001;
    acQuitSaveNone = $00000002;}
  Access.Quit(acQuitSaveAll);
end;