microsoft access security notice

Can't remove the ms access security notice in access run-time 2010 environment

I've made an application using ms access XP and now I'm trying to port it into access 2010
I've converted all database into the new format
into this application there a 'program' database, which reach the table with the attached tables and has in it all program code (write into VB modules): this database has a macro named 'Autoexec' that automatically run the code that show the application menu. The other database contains only data (table and relationships)
Into a PC (without ms office 2010 installed) I've installed the access 2010 run-time
when I run my 'application db' access run-time show me the
into the Microsoft documentation I've found the following solution but none of this suppress the message box
1. modify the security 'sandbox': see pages 1-2 of attached file
2. Package and sign: see pages 3-7 of attached file
    this solution doesn't solve the problem: what happen is:
    user run the packaged file (.accdc); the certification installation appear and the install procedure end successfully, but before start the 'program database' the security notice appear
3. disable the security warning into the database: see pages 8-9 of attached file

does anyone know how to kill this security notice?
many thanks and best regards
Giuseppe Siboni
access-security-notice.pdf