[NumLock]

а я сделал правильно и у меня "пашет":

Код:

var
  document: IHTMLDocument2;
  btns: IHTMLElementCollection;
  btn: IHTMLElement;
  i: Integer;
begin
  document:=WebBrowser.Document as IHTMLDocument2;
  btns:=document.all.tags('button') as IHTMLElementCollection;
  for i:=0 to btns.length-1 do
  begin
    btn:=btns.item(i, 0) as IHTMLElement;
    if btn.innerText='Заполнено' then btn.click;
  end;
  btns:=document.all.tags('input') as IHTMLElementCollection;
  for i:=0 to btns.length-1 do
  begin
    btn:=btns.item(i, 0) as IHTMLElement;
    if btn.getAttribute('value', 2)='Далее' then btn.click;
  end;
end;