There is this article on FBT design from TI that might be helpful:
http://focus.ti.com/lit/ml/slup127/slup127.pdf
There's also this from the SMPSU folks:
http://switchmode-notebook.blogspot.com/2010/07/designing-secondary-
windings-of-flyback.html
Thanks, I will take a look at said references...
-tony