Ziggurats are primarily Middle Eastern (and mostly in Iraq), I think you want a Step pyramid like they have in Central America. I made one once, but it was a go'auld spaceship. I think you could get the overall shape from cube primitives, the stairs would be the only hard part. I could probably rework my mesh to get rid of the sci-fi parts if you're interested..IM me if you are..

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)