Работа с Netscape Navigator через DDE

uses DDEman;
...
procedure GotoURL(sURL: string);
var
  dde: TDDEClientConv;
begin
  dde := TDDEClientConv.Create(nil);
  with dde do
  begin
    // specify the location of netscape.exe
    ServiceApplication :="C:\Program Files\Netscape\Communicator\Program\NETSCAPE.EXE";
    // activate the Netscape Navigator
    SetLink( "Netscape", "WWW_Activate" );
    RequestData("0xFFFFFFFF");
    // go to the specified URL
    SetLink( "Netscape", "WWW_OpenURL" );
    RequestData( sURL+",,0xFFFFFFFF,0x3,,," );
    // ... CloseLink;
  end;
  dde.Free;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  GotoURL("?wurl=www.site.ru");
end;