more about how these 400 scripts were built right now. Did they use ODBC to connect? If so, you might be able to do a lot by changing the ODBC data-source definition itself, which is (by design) centrally managed. Changing the SQL and/or programming within the scripts is more problematic since the two database engines are not quite the same. What we – and you – need right now are details. For instance, can you post the source-code of one small but complete script for our inspection? Before you and your colleagues start to "actually change anything anywhere," you need to plan this project and its deployment quite thoroughly.