Simple Intro into a full Animation

Hey everyone I was wondering how I would go about doing this it was originally made in Blender so there is no problem there but I can’t seem to get it right I ve tried putting tons of UV Spheres and letting them drop but it never comes out right here is a link too what im trying to get at h**p://mpan3.homeip.net/animations its the Atom Studio one but just the first part of it with the satic water on the bottom then the rain drops from the top