Not sure if there are genitals, but at zoorender.com, they have a model called "Adam" you can download.

Not sure on the copyright, so you might wanna check that!

I used it a day ago for trying out Mt. Mkinley's <-sp? arm stitching tut.

BTW, what a KICK ASS tut man!!!!
It explains all!

Thanks, and I hope that helps.
remember to check about copyright!!!