"Unrecognized Database Format" Error Message
If you got "Uncrecognized Database" Format" 
error message, 
it's probably because the access database version that you 
work with 
isn't compatible with your DAO reference.
To add the 
compatible reference 
to DAO: 
from VB menu choose 
Project-> References, mark the Microsoft DAO 3.6 Object Library
            
   check box, and press OK.
If you Don't have 
Microsoft DAO 3.6 Object Library reference, click on browse, 
and select the 
file C:\Program Files\Common Files\Microsoft Shared\Dao\dao360.dll 
            
            
      (If you 
have Access 2000 installed in your computer you have this file.)
This will add Microsoft DAO 3.6 Object Library reference to 
your project. 
Now mark it and press OK.