Currently i using microsoft Excel 2000, i put formula =IF(A1<>"",today(),"") in cell A2. When i key in all my entry data in cell A1, cell A2 will auto prompt up today date.But when i save the file and open it in next day all the date in cell A2 became new date not yesterday date or previous date.How to kept the previous date without when open the file on the day.Anyone can give advices???