SQL server reporting services custom data extension.

I have looked around on the net and have found few resources which tells you how to create the custom DPE(data processing extensuion) but none of them seem to work for me. My scenario is I need to bind a dataset to SQL reporting services report based on user authentication from the database. This article explains it but I have tried the code and seems not to work. [login to view URL] I have an app which uses DAL to retrieve info from the SQL by using helper classes, is it possible to retreive the dataset and then bind it and if the user does not have the permission then just deny the report creation. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform win xp