light set up with lamp texture? how to

light set up
it looks like that for area light raytrace
you can add a Branches texture
but i cannot find it in 2.49

can someone point out to do this if possible in 2.49 and may be in 2.5 ?

wiki on area light set up
right at end of page above the ambiant occlusion part

pic for set up

Thanks and happy 2.5

ok i found it

when you add a lamp like hemi there is a texture panel where when you press on the arrow it show a list of procedural texture which include this Branches texture for lamp!

see pic