Steve, here's code I use to do just that.

Dim strSQL As String
strSQL = "UPDATE DISTINCTROW [qDBTCMAST ALPHA] SET [qDBTCMAST
ALPHA].NEEDS_NL = False " & _
   "WHERE ((([qDBTCMAST ALPHA].NEEDS_NL) = True));"
CurrentDb.Execute strSQL, dbFailOnError

You could put this code in a command button's click event, run it
automatically each time the database is started, or both.
These lines may break at odd lengths in your reader. The strSQL is 2 lines,
breaking at the end of the underline.

HTH, UpRider

One, simplistic, way is to use an Update Query.  Once printed, run the
query to reset the "ToPrint" bits from a line of code sometime after
the line of code that prints the report..  However, in my world, the
printer can have problems, things can go wrong on an individual report
or a series of them.  The real world requires some handy means of
handling those "exceptions".  I've interrupted those automatic
routines with a msgbox asking if all printed OK and its alright to
clear the bits.

HTH