Access 2003 custom menu in Access 2007, closed, never to be seen again??

Hi
I look after an Access 2003 application (mde) running on Access 2007 which uses a custom menu bar. A user has discovered that the menu bar can be dragged from its location to become floating, and that once floating it can be closed. Once closed I cant find a way to reopen it. I have tried reinstalling the mde to no avail so it must be something in Access itself. I have discovered that I can't edit the menu in 2007, http://accessjunkie.com/faq_31.aspx, I have to use 2003 which we do not have on any office machine!!!

My questions are firstly how do I get the menu bar back on this one machine and second how do I stop it happening again, i.e. lock the menu. Do I have to go back to 2003?

Thanks for your help