I have an application written in VB5.0 that interogates and updates an Access 97 MDB file. It works fine. I have now upgraded to Access 2000 and the VB frontend returns a message "Unregognised database format error 3343". What do I have to do to make the VB code recognise the 2000 database? Is there something that must be loaded? I guess it is the change to the new Jet engine. What are the implications if I want to use the MSDE engine?