The information you've provided does not contain any info on the problems you've encountered. In order to get familiar in a fast and pretty straight-forward manner with our Reporting offering, I suggest you visit the online resources linked below:
and more specifically the Web ReportViewer help section
containing all necessary info to show report in the viewer.
Of course, you can browse the public forum as well in order to find specific information/code sample concerning the aspect of the Reporting features/issues you've encountered. There are numerous threads which can get you started/assist you through the development process.
Also in order to learn what info we would need in order to help you, please review the guidelines to using the support forum
the Telerik team
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