When a user start an Access 2007 database that have macros and vba, a security warning is shown. I want the user to deal with this warning, so if the the content is\'t enabled,
You might like to consider a start-up form ("information"). This will show without macros.
In addition, you can run some start-up code or a macro that closes the information form and opens the main form ("start menu"), if macros are disallowed, this will not run. However, I think you may get an unsightly warning.
EDIT
Set the timer interval to say, 100 and add a little code to Information form:
Private Sub Form_Timer()
DoCmd.Close acForm, "Information"
DoCmd.OpenForm "start menu"
End Sub