Dlls to import in fastreport.

I am using fastreport.net for reproting facility for winforms.

Now I have imported only one dll that is fastreport.dll in my project. That is not working. Because fastreport.bar.dll should be imported,if I import that dll in my project,then it works, but I came to know that there is no need of importing other dlls than fastreport.dll.

So is there need to import fastreport.bar.dll to import in my project, and I read in the manual that if I want to use docking window and all that then and then I will have need of import it ? Has anyone idea about that ?