The tree is called Tree-mendous and it is available from embroidery.com, here is the link:
http://www.embroidery.com/product.asp?sid={44C5CF5A-A82C-498B-A034-63449407F787}&productsetID=125110&EFID=72&shopstop=1
It is very time consuming, but well worth it. The instructions are very detailed and easy to follow.