[Paraview] Visualizing a .csv

[mariagrazia.madaschi at libero.it]

I have an excel file which contains x,y,z (points coordinates) and an id (i use 
it to group coordinates according to specific feature).
I want to visualize points with Paraview. I tried to save my file in .csv 
format and i opened. What i see is a table with 4 columns (x, y, z,id). Is 
there any way to visualize these points?
And....is there any way to color points, with the same id, with the same 
color?

Bye