Each time I open a word document I want an automatic caluation

[nicolafay]

I have a word document which documents the date I have sent out an invoice to a customer and the days they are overdue. But is there a way of setting up a automatic calucation so that each time I open the word document, it calcuates the over due days based on the date of opening?

[macropod]

To see how to do just about everything you might want to do with dates in Word, check out my Microsoft Word Date Calculation Tutorial, at:
http://windowssecrets.com/forums/sho...ation-Tutorial
or:
http://www.gmayor.com/downloads.htm#Third_party
In particular, look at the item titled Calculate the # Days Difference Between Two Dates. Do read the document's introductory material.

As for the automatic calculation, Word won't do that without a macro, which is quite simple. Otherwise, you could just use Ctrl-A, F9, to update all fields in the document.