I'm assuming you mean being able to craft glowstone out of dusts? IC2 enables that.
Edit your IC2.cfg file, and change
# Enable crafting of glowstone dust out of dusts
enableCraftingGlowstoneDust=false
I did this as I prefer being forced to gather Glowstone from it's unique environment (excluding mystcraft ages), and not with gold and redstone (I believe)