Many large organizations are now using Expert Systems (ES) to enhance their global and domestic competitive position. Introducing an ES requires a significant commitment of organizational resources. Therefore a means of justifying its value is paramount to making a prudent ES investment decision. Most ESs are typified by numerous intangible benefits and costs. Traditional cost benefit approaches to evaluation are unable to account for the contribution of intangible benefits to the value of an evolving ES project. This paper presents and applies a method which overcomes this problem by utilizing a scoring approach to ES valuation