Ohhhh, that's awesome!!! I collected raintree seeds years ago but gave them to my sil when I moved along with all the other seeds since I couldn't bring them due to space. I'd love to see pics of your raintree!!!

I did find this link on growing from seed: http://motherhood.modernmom.com/propagate-golden-rain-tree-6820.html

If at anytime you might be willing to trade some seeds for something else let me know. :)