Use the open explicit to ope your database in access.

set the password (menu Tools>Security>Set database Password)

In this way only you will set a connection to your database using this 

string 

Conn.Open "DSN=dsnname; pwd=yourpassword"



Then ask your server administrator to change the MDB file permission to 

disable OTHER reading.

This will protect your file from browser downloading



Hope it will help!



Gabriele