I wish to create a crystal report from an Excel workbook that contains many sheets. Each sheet contains data regarding a one project each. All sheets are of the same format in displaying data. How do I create a crystal report from this workbook, so that the data in the crystal report is displayed as treeview of which the project data itself can be expanded and minimised? Finally this has to be installed in the client's computer. Should I create an addin? You experts out there, please suggest and help me.