Billy McCafferty (twitter.com/devlicious) has written a great post on integrating ASP.NET MVC with ActiveReports for .NET.
He writes:
"A long time favorite PDF reporting tool of mine is ActiveReports for .NET. It's relatively painless to integrate into your project, has a great designer tool, and has plenty of power for more advanced reporting needs. When I started becoming an ASP.NET MVC zealot, I was afraid of losing the ability to use this great tool. With a little tinkering, I got it to play nicely within an MVC project and have included the steps below for future reference:"....
Read his full posting.