1. A system for calculating financial benefit estimations and generating reports for multi-dimensional project plans for implementing packaged software applications, the system comprising: a view layer configured to act as a user interface for user inputs and system outputs; a model and control layer configured to implement rules based on a series of estimation and implementation models, and to perform calculations to determine financial benefits of implementing multi-dimensional project plans using one or more financial benefit estimators working with one or more staffing and cost estimators in signal communication with one or more estimation knowledge bases of an estimation knowledge base layer, the estimation knowledge base layer configured to hold and derive the series of estimation and implementation models; the one or more estimation knowledge bases including financial benefit and value analysis models to facilitate financial benefit calculations by the one or more financial benefit estimators, using a recursive algorithm to calculate the expected values of a series of value drivers affected by one or more information technology (IT) capabilities, in accordance with the expression: E ⁡ [ n p ] = ∑ i = 1 , k ⁢ ⁢ ( E ⁡ [ n c i ] × E ⁡ [ e c i ] ) wherein E[n p ] is the mean value of a node, n p , in a value driver tree where values for one or more edges of the value driver tree are user inputted values, E[n ci ] and E[e ci ] are the mean of a child node n ci and its edge to n p , respectively, and k is the number of children n p has; wherein calculation of the expected values utilizes: a usage factor on each edge in the value driver tree between an IT capability and a business activity, the usage factor indicating how much of the business activity the IT capability is used for; and an improvement factor on each edge in the value driver tree between a business activity and a metric node, the improvement factor indicating how much the metric is improved by the IT capability; and the one or more financial benefit estimators configured to output a mapping of value drivers to standard financial measures and return on investment (ROI) terms for generating business reports.