Oh yes... because EVERYONE wants to know how Cen-chan learned to shade.

yeah... learn this.... I GANKED IT!!!!

YEAH... that's right.... someone told me an easier way than what I was doing... so now i'm giving it to you. so self-less of me, ne? HA

do be warned though... this will mulitply your layers by 3 -- your color's layer, a new shadows layer and a new highlights layer.

One thing I didn't mention... if you need to get a little more specific about where your highlights/shadows go, you can block that part out instead of doing the control click thing I say. (isn't it apple click for mac's? I don't remember it's the one by the spacebar, i think)

but yeah... just use your brain... and hopefully you'll go far. ^_^

but like i did say, this should work for any version of photoshop. I'm using cs2 and i can still use it... and I could use it on my learning version of 5.5... and learned it in 6.5.... used it in 7.0... yeah... it's pretty much across the board.