It is difficult to tell since I don't have access to your driver prototype.
But since ADO is using MSDASQL to connect to an ODBC driver, you may want to
make sure your driver works well with OleDB first. To do so, you can try to
run the OleDB conformance test, which can be downloaded from:
You can then compare the result between your driver prototype, IBM DB2 ODBC
driver, and SQL Server Native Client 10.0.
WDAC Team, Microsoft.
P.S. We recommend customers to use the forum to ask questions in the future,
where you can obtain a faster response (Forum is at: