I have sent off a email to an old contact who used to specialise in this in Melbourne to see if she recommends any programmes that can be purchased over the internet - or knows someone else who does the same work as she used to. Not sure if she is still using the email address I have but it would be worth a try. She helped a lot of people.

Of course, googling 'natual gender selection' produces heaps of info but what works and what doesn't is difficult to determine.