This article presents considerations aboutviability on reutilize existing web based e-Learning systemson Interactive Digital TV environment according to DigitalTV standard adopted in Brazil. Considering the popularityof Moodle system in academic and corporative area, suchsystem was chosen as a foundation for a survey into itsproperties to create a specification of an ApplicationProgramming Interface (API) for convergence to t-Learningcharacteristics that demands efforts in interface design areadue the fact that computer and TV concepts are totallydifferent. This work aims to present studies concerning userinterface design during two stages: survey and detail offunctionalities from an e-Learning system and how to adaptthem for the Interactive TV regarding usability context andInformation Architecture concepts.