The second question is this. I am trying to create a workbook with information that when used, will not show on a third worksheet. i.e. If I put numbers 345 654 789 410 on one sheet, and three of those numbers are repeated on a second sheet, can I use a formula on a third sheet that will only bring up the fourth number? I guess there must some sort of "vlookup" formula, but I am not experienced enough to get it. I will be using over 200 different numbers eventually, but the fill in formula will sort that out.