var
 Excel: variant;
  i, j: word;
     S: string; 
begin
     Excel := CreateOleObject('Excel.Application');
     Excel.Workbooks.Open(FileName);
     Excel.Visible:=True;
     for i := 1 to 5 do
       for j := 1 to 5 do 
        begin
          S := Excel.Sheets[1].Cells[i,j].Text;
          ShowMessage(S);
        end;
end;