When you reference ActiveX Data Objects (ADO) in your Visual Basic 6.0 project, and use the Package and Deployment Wizard to build the install, the wizard uses the MDAC_Typ.exe file in the ...\Wizards\PDWizard\Redist directory.
If you install Visual Basic 6.0 and then later install MDAC 2.1 or later through the SQL Server 7.0 Client utilities or some other method and make no other changes, then MDAC 2.0 is distributed with your application. In order to distribute MDAC 2.1 or later with your application, you need to replace the version of MDAC_Typ.exe that resides in the ...\Wizards\PDWizard\Redist directory with the newer version of that file.
You may obtain the latest MDAC release and see a list of available MDAC releases available for distribution from
http://msdn2.microsoft.com/en-us/data/aa937695.aspx.