If you right-click the Reports folder in Solution Explorer, and select Add>New Item> and then select Report (not Wizard), you should get a blank report that opens. At that point, if you right-click the Data Sources folder under the Report Data window, you can add a new report-level data source. At that point, you can select the Use shared data source reference, and select the shared data source you created previously. Then you can create a dataset. (right-click the Data Source you want under Data Sources folder, and that's one of the options).