>>
>>The main problem we will face is the fact that the Programmers will have to learn 3-tier design as well, and I think this will at LEAST double the work.
>>
>
>It depends (if you are going to be using a new framework, then I'd agree). If not, I would at least make an effort to isolate code. Some simple rules that most developers can follow:

New Framework, 2 new languages and new (UML) analysis method!

Kev

*SNIP*