Duncan, I have been giving this a lot of thought as there was something that I was interested in, but would assume that it would be too expensive to seek a professional consultant that it would be unrealistic to even try, let alone to focus on what "words" I would search on.

I would think it needs to be as simple as possible.

Would you be interested in using my "interest" as a test case, if so send me an e-mail - perhaps we can do it as a "joint" venture! Note I am not seeking any financial backing.

Yvonne