Convert points to blocks

Hi guys, i have 3 different cad files for lights, drains and trees and they are all located as points.

There are hundreds of these points and they all look the same, obviously I want to differentiate lights from trees so is there a way to convert these points into unique blocks?

Cheers all.

How did you get the points in the first place was it from a x,y,z file if so throw into excell and just write a line for each xyz, INSERT myblock xyz 1 1 0 and save this column as a script txt file .SCR (cut paste into notebook) and then Autocad command SCRIPT. Check the concactenate command in excel.

1 2 3 insert blockname 1,2,3 1 1 0

excel code

1 2 3  insert myblock =CONCATENATE(A1,",",B1,",",C1," ") 1 1 0 =CONCATENATE(E1,D1,F1,G1,H1," ",I1," ",J1)

Else its pretty simple lisp get all point into a list the just walk through them find their xyz and as above insert a block could be a good one to have a go at ?