how did you do this, can you give me a detailed walkthrough. i am really a newbie who can just creat different shapes.

jsprogg,

i think you got what i want here. just a individual component, and form a bigger structure with this component.

such as a sphere or half sphere consist of small balls as surface...

sorry about the confusion. the object in the graph is liposomes, and is made of lipids. i am wondering, if i can draw a lipid, which is the units that make up the sphere, can i draw that sphere?
...

if you only have the small unit item on the surface, how do you form a sphere or squre with this unit component?

help guys. how do you draw these kind of 3-d spheres, if you only have the unit component.