Performance is priority number 1, however I want to keep the ADO
mechanism because we may switch to SQL Server in the future.

Which ConnectionString then, so that I can achieve connection pooling?

If I use the OLEDB Jet provider, I then get an error executing a stored
procedure (it requires some sort of PROCEDURE keyword in the SQL
instead).

I just want to get it right for the fastest execution and I also want to
use a connection pool.

If someone had experience in all this, that would REALLY help.

Yann.