Thanks for the warning. Having been involved in Software Engineering and CASE since 1980 I know in my heart you are right. It is certainly better to use what I now have as a set of requirements and redo everything. I am struggling however to come up with a transition plan that will allow me to deliver / market something in the near term while I rebuild in the background. If you know of any self study courses / materials that will help I would appreciate hearing about it. Thanks. Jack.