How to work with brep

Hi!

I'm a architecture student who is new to Rhino and Grasshopper. For one of my media classes i've programmed an algorithm that's generating a pointcloud, which is then imported in Grasshopper by using the vb.net component. So far everything works, but here comes the problem. I've drawn a 3d object that i now want to place on every point in that pointcloud my teacher said it could be done with the brep component in combination with a vector but i cant get the brep block to 'link' (no idea how to call it) the 3d object in his brep collection.

Can anyone help me? 

(sorry for my english)