Hello,

Well, a lot of this depends on how you plan to create reports or what your goals are. DNN just uses a SQL Server backend. So, for many reporting services, you can skip DNN directly and just write reports that run outside of DNN directly against the DB.

If you want to integrate your reports into DNN, that can be done many different ways. You could write a custom module to host some reporting components - like Telerik Reporting - and then create your reports normally that way. There are some existing modules that already do that, with varying degrees of customization. If you just want to display simple data, you can use any number of modules (like the DNN Reports open source one) that just do templated displays of data from some SQL query.

Mike