Hi Phlip60 and welcome to our forum!
With our Qdabra Database Accelerator Web Service, you can do this without code (we have an EnumerateDatabase method that takes filter parameters which can be bound to the form). Without it, you have to write code, and it gets worse - you need .NET SQL Client permissions which is a deployment hurdle. If you want to install a free BASIC version of our Qdabra Database Accelerator Web Service, let me know. The current evaluation version is October's beta which is missing this web method. We are going to release V2 this month and I can send you a private copy in the meantime. Or, you can just write a STORED PROCEDURE in your SQL 2005 DB and expose it as a Web service method and call that. :)
Patrick Halstead
Project Manager at Qdabra