Most universities are now moving to online and distance learning systems to meet the needs of different types of learners [1]. Indeed, 'e-learning' is already being used by a number of universities [2], which offer online courses and degree programs. The online and distance learning systems can be used either to replace face-to-face learning or to assist students with face-to-face learning. Numerous different learning styles have been identified, which take into account individual differences in the way people learn. The learning styles theory implies that how much individuals learn has more to do with whether the educational experience is geared toward their particular style of learning than whether or not they are "intelligent". Individuals perceive and process information in very different ways, therefore, there is a necessity for a learning system to take into account as many details as possible in terms of the learning styles of the users [3].......