>>If you neatly isolate the data plumbing (updates, retrievals, inserts, deletes) have them in a business layer (neat and tidy), get the >>system to work as at now, then switching the data source would be much simplified. 95% of your code is really the same so you'd >>be be building the 2 apps from the same source code. Switch the data source at the application level.

Thans Mathias.

Gary.