The main purpose of this study was to evaluate the usability of a site called the e-Lesson Creator (eLC). E-Lesson Creator is a web-based course management system developed by a group of researchers from the School of Educational Studies, Universiti Sains Malaysia led by Abdul Rashid Mohamed. The main objectives of the development of the eLC were to create customized lessons to suit the learning needs of learners with different levels of abilities and to make it readily available and easily accessible to teachers at different geographical locations. In practice, the e-Lesson Creator is a platform from which teachers choose and pick the material needed from a multimedia library using a lesson template wizard that has been specifically created for that purpose. The evaluation focused on usability testing of its interface design. This usability testing employed the Heuristics Evaluation method (1993), which involved examining the e-lesson Creator s User Interface Design in the areas of Screen Design; Navigational patterns; Ease of Access; Ease of Use of Site and Flexibility of use. The evaluation pointed to positive and encouraging acceptance by the subjects.