Disable the AllowByPassKey

Hi,

I’m working on a database with 2000 file format in access 2007 and wants to disable the AllowBypassKey to secure my database. When this key is not disabled users can start up the database holding the shift key. I’ve tried to do what is on this link http://www.mvps.org/access/general/gen0040.htm
but i can’t let it work. Can anyone help me?
Sabine