During the development phases of a new product, special attention is usually directed to the allocation of reliability improvement programs. This paper will present an interactive knowledge-based decision support system (DSS) for optimizing this allocation process. The DSS utilizes an extension to the modified exponential reliability growth mode, which was developed to quantify and monitor reliability during the product development phases. This paper addresses the reliability of complex electronic systems. It determines the rate of growth, and the level of initial reliability required in order to meet the expected market requirement.