Right on Mile! Here's a reference for future viewers. This basically amounts to a souped-up inputbox.
'clear tags
Me.FRNT_Serial.Tag = ""
Me.FRNT_Part.Tag = ""
'open and wait
DoCmd.OpenForm "NEW_CASE", , , , , acDialog
If Me.FRNT_Serial.Tag = "" Or Me.FRNT_Part.Tag...