I have just added an article on The awarding of Child Custody and Transsexuals. And interesting read.
The article can be found here:
http://susans.org/wiki/Child_Custody_%28The_awarding_of%29_and_transsexuals.
Steph
Skimmed it. It's pretty close to the Canadian state of the law as well. Best interests of the child are the deciding factor and each case is decided on a case by case basis.
Dennis