[vtkusers] urgent

[Dharmendra]

Hi All,
     I have to render a molecule which has many atoms.Basically this boils 
down to drawing spheres.
I have to draw some 5000 spheres.
My problem is when i render so many spheres rendering is very slow and 
interaction
even slower.

Is there a better way of rendering  so many spheres and still maintaining 
the speed and interaction.

thanks in advance.
dharmendra