John,

>No real problems at all, unless, like Dave points out, you need to pass data in or out. Then it gets dicey because you have to rely on things like CursorToRS and RSToCursor.

Or to and from XML, or with VFP on both sides using Rick's utilities to pass the cursor in a special format over HTTP, or for 1 record passing a SCATTER NAME object.

Any way you look at it, though, it involves some kind of conversion.