You unfortunately can't unless you have 3d studio max. So ask around in the art forums for someone who may be able to convert it for you. What are you talking about specifically? The tree houses?

http://rapidshare.com/files/403578925/3 ... e.zip.html

3ds version, sorry, was a thoughtless idea to put it up in max.

that's how it starts; smoke a joint or two, have a beer, pretty soon you're selling your body for crack

...but you got to try, try and try. You suckweed at last! And there is nothing wrong with hired help, even if its just for a crack :)