A lot of node composition and all. Enjoy… 
Blender crashes a lot so I had to manually restart it several time, but hey I got it finished!
Hey that’s cool!
Can we see the nodes?
Really nice looking! I’m very interested to know how you managed the indirect lighting effects.
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](http://img222.imageshack.us/my.php?image=nodespu7.jpg)
That’s my node set up. It’s not that complex, but yet effective. 
And for indirect light, I used a fall off lamp with no shadow on and duplicated another one in the same position for spot shadow-only mode that has the raytraced soft shadow set at high.
looks great