Hi!
Assuming you have a form that opens whenever the Db is opened you can use the following:
If Date() = DateSerial(Year(Date()), Month(Date()) + 1, 0) Then
Here you can call a form to change the password or pop up a message box as a reminder, make the control visible etc. You can also put in the condition that this stuff only happens if you are the user.
hth
Jeff Bridgham
bridgham@purdue.edu