Information and communications technologies (ICT) competency has been identified as a deficiency in teacher training in the basic education system of Thailand. This research aimed to study needs and training for enhancing ICT competency. Some 377 teachers from 35 schools and 12 school directors, supervisors and professional teachers were surveyed to identify training problems and needs. The results found that teachers require training focused on achieving better practical skills and understanding towards ICT. Current training does not adequately support creation and use of ICT media in instructing students. Guidelines to successful training were identified as including proper needs assessments of teachers before training, development of interesting and useful training curriculum in association with teachers, and use of blended training methods (traditional lecture-based training plus internet-based training).