Your in luck! The solution is pretty simple; if you've looked through the Vektorbosen's tuts then you probably saw cl_basic,cl_water, and cl_fire and will know where to put this stuff in the drop command. The one you need is "cl_fire". Then, to make it white make the color section of the command like so:
[[1,1,1,1],[1,1,1,X]] (make the X a zero if you want it to fade out after the lifetime expires, or one if you want it to blink out like a light)
ya know what? let me cut and paste one real quick...
drop ["cl_fire", "", "Billboard", 30,30, [0, 0, 0], [0, 0, 0], 0, 1.275, 1, 0, [10,20],[[1,1,1,1],[1,1,1,0]],[0],0,0,"","",_object]
just name something for the _object or use coordinates.
-Grendel