I was wondering if this was possible. I have a form where I enter info about an item. In this form there is a section for multiple Square Footages. SquareFootage1, SquareFootage2, SquareFootage3, SquareFootage4. I also have a field for total Square Footage so if I don't know the individual Square Footages I can just enter the total. My Table has fields for all these as well. I was wondering if it was possible to have my Total Square Footage text box update as I enter data into the individual fields on my form. OK, but now what if I know only 2 of the individual fields but also know the Total? Can I enter the total manually? If it can be done great if not, well thats the way it is.