The name of the reporting item template should be Telerik Report Q1 2008
. Please refer to the online documentation for more information: Creating a Report
where you can find some screenshots illustrating that.
The default extension of the file is .cs(.vb) because the report is represented by a .net object defined in class file which is compiled together with the rest of the code.
Please, send us a screenshot if there is some sort of discrepancy on your configuration.
the Telerik team