>
>If your middle tier is a dll.


I come back to my stance that a middle-tier is not much good as a class dropped onto a form. One of the advantages of doing things in n-tiers is that you can change one tier without affecting the other. As a VFP class droppped on the form, if you change the biz class, you then have to recompile the form....thus changing it. You now have to redistribute a new EXE to every desktop. IMO, there aren't lots of advantages doing things that way.