The Premodels Manager, one of the tools of the Simulation Model Development Environment (SMDE), is required to enable a user to locate and reuse components of successfully completed simulation studies and learn from past experience. This paper presents the SMDE Premodels Manager and describes how it provides reusability and learning support. Objectives are set forth and a design is established and implemented on a Sun workstation. The SMDE Premodels Manager consists of four working windows, three access windows, and three support windows. It uses the SMDE Premodels Database which is a highly modifiable repository of documentation on successfully completed simulation studies. It is evaluated with respect to the design objectives and is shown to provide effective reusability and learning support within the SMDE.