Here, I'll just post a picture so this makes a little more sense (hopefully). This is a screenshot of my DB.
Here: http://www.hangnailproductions.com/DB_Example.gif
Since you started helping me I have added 1 the "RUN REPORT" button. This shows all (and only) the records with the checkbox "PRINT" set to true. Awesome.
BUT, when this runs, I will be printing off all invoices for my hosting clients for this quarter. I would like to update 2 "LAST INVOICED" (to the current date when the report runs) and 3 "DUE DATE" (which will use DateAdd to add the 30 days needed) across their entire sets when I hit the "RUN REPORT" button.
Otherwise I will have to edit each date manually.
I wouldn't even bother but once a client is added, the invoices will be recurring until they cancel service.
Ok, hopefully than clarifies things a bit.
Again, sorry so vague.