No idea i am afraid. If the horse was still with the breeders when the stud was sold he may have gone to the Middle East as lots did. You could contact Tchaata Arabians (tchaata@wanadoo.fr) in france as they have a Shamilah mare so may know details of where some of the other Shamilah horses went.
I have just had a look at your website, you have some absolutely fantastic horses with some of my favourite blooodlines. I have just had a little look around and it appears menestril is in UAE, if you go to the avalon ranch site (www.avalonranch.com) they have a forum section with a couple of articles on shamilah horses, from what i could make out it said he went to UAE (it was all in french!)However if you email or ask on that forum about him you will find out more, they all seem to know loads on shamilah. Emma