This survey aimed at revealing educational software development difficulties of the preservice computer teachers (n=57) in a virtual chemistry laboratory (SANLAB) development project besides their suggestions to overcome such difficulties, and views on 7E model and contributions of this project. The findings revealed that most of the preservice computer teachers agreed upon the contribution of 7E model for meaningful learning. However, they reported that they found very difficult to prepare a chemistry experiment electronically, use ActionScript codes and make animations. The results may provide insights for those who intend to conduct national projects in collaboration with preservice computer teachers, academicians and teachers. (C) 2010 Elsevier Ltd. All rights reserved.