Hi MCalicea and welcome to our forum,
This is easy to do with our Database Accelerator Suite but difficult without because of the limitations in InfoPath of passing parameters to your SQL query. Send me e-mail, and I'll send you a free beta version. Please see
http://www.qdabra.com/proddetail.asp?prod=QDBXL1 for details on our V1 suite. We are currently finishing up version 2 and hope to release it in the month. We haven't finalized plans, but we will probably have a free campaign to give away Standard Server Licenses for first 100 users who deploy and send us detailed feedback on usage scenarios.
If you'd like a quick Live Meeting demo of your exact scenario working with our suite, send me e-mail and I'd be happy to schedule something virtually.