Are you sure that ODBC is not the bottleneck? Never used ODBC myself, but I've heard that it is very slow.

Before you start looking for solutions, I think you need to verify what the exact problem is. If you're getting 50 requeste/second and you have 6 queries per page, than a simple calculation shows that your database should be able to handle 300 requests/second, and that your connection should be able to handle the data associated with those requests.

If your MS SQL server is not able to handle that, then a commercial connection product is not going to help you at all.

Liz