Bryce 6.1
But now you can get Bryce 7 for free. I have that too, it is pretty much the same. Bryce is a very easy program to learn, but it will take at least a year for one so as to be able to create freely detailed 3d objects i guess. (if you have no previous experience with 3d modelling that is)
I have been using the program for 3 years now.
I don't think he is around anymore...So, Kyriakos, we can use your city sets?