Thanks for that, Fletch and Aussie_Chik

It has at least set me on the right path... I've discovered that there are 4 different places that are probably within easy reach of us: Next Generation Fertility in Westmead; IVF Australia which has a monitoring site in Castle Hill, so that would probably be mainly Westmead again; Sydney IVF which has a centre in Baulkam Hills; and the Westmead Fertility Centre, which doesn't seem to mention IUI on their site at all!

I'll check around the sites a bit more and probably come back with a billion more questions...

BW