I need to build a portal that will display reports currently available on excel format. Users will login to a password protected section of the portal where they will be able to create expenditure reports based on filters selected. You can view a screenshot of what we are trying to built on w w w dot mediaxim dot com/product/adstat. The whole data is currently stored and retrieved based on excel pivot tables. We can use excel as the calculation engine to display the data, we just need to built an online user friendly interface to retrieve the reports. If interested email me and i can provide much more details.