Those renders looks awesome.
I remember I did this one in Imagine ages ago, it took more than a day on an 030/50
6 light sources, and probably an ambient as well, lots of glass with different refraction. Unfortunatly I don't have the scene anymore, and I cant remember how to do it any more.
http://www.yssing.org/cms/show_pic.php?id=201&type=1&kid=9
