There are many factors that must be considered when making instructional media selection decisions, with the suitability of an instructional media to the learning task being the most significant. E-learning as a form of technology based training has many strengths, but is not suitable for the treatment of all learning tasks, and cannot always be considered as a complete instructional solution. To complicate matters certain types of learning task require that certain potentially supported media attributes must be expressed, these may include certain forms of embedded media or specific types of interaction that are supported by computer-moderated communications technology. By analysing the qualities of the learning task through what is required by the training objectives in terms of learner performance, conditions of demonstration and measurable standards, we can make an evaluation as to the suitability of a form of technology based training from a list of candidate media. Instructional media may support any or all of the following - delivery of instruction, support for practice and assessment of performance. This paper outlines a flowchart based methodology for assessing the suitability of learning task to e-learning treatment, whether as a partial or complete instructional solution; and makes recommendations as to the form of technology based training that is most suitable. These criteria were implemented into a decision flowchart suitable for elaboration into a decision support tool, enabling users to assess the proportion of an extant course suitable for conversion and the type of technology based training considered to be the most suitable for each training objective.