You could also do this in code, on the Form that shows on opening the database:
Code:
Private Sub Form_Load()
DoCmd.NavigateTo "acNavigationCategoryObjectType"
DoCmd.RunCommand acCmdWindowHide
End Sub
To bypass this, so that you can use the Nav Pane, you'll have to open the db while holding the <Shift> Key down; this will keep your 'opening Form' from opening, and the Nav Pane will show.
Once again, a really savvy user could subvert this, but I think it's unlikely that the average user would know to use <Shift> Key to not show the opening Form, or that doing so would keep the Nav Pane from 'hiding.'
Linq ;0)>
The problem with making anything foolproof...is that fools are so darn ingenious!
All posts/responses based on Access 2003/2007