>With multiple indexes (or TAGs), each index (or Tag) would have a primary key, right?

You lost me. No, only one tag can be the Primary Tag for the Table. The value of the expression of that tag has to be unique.

>I'm curious - are most VFP developers using VFPs native DBMS, or - are they going to SQL? Would it be to MS's advantage to drop VFP so that every commercial app we develop (and distribute) requires the enduser to buy a copy SQL 7? Right now MS gets nothing when a VFP native is distributed.

Well, MSDE is free so that kindof contradicts it, doesn't it?