I cooked this using two of these recipes:
http://www.themalaysiancuisine.com/2009/08/dried-prawn-sambal.html and http://www.malaysiabest.net/2009/01/01/you-must-try-this-dried-shrimps-sambal/
As for the lemon grass, I chopped it small and blended it with the wet ingredient.
Fried the dried prawns seperately and then fried the wet ingredient till it's almost dry/dry and add in the dried prawns and keep frying until it is dry.
Caution: Easily burnt, so you need to keep on stiring. And it sure takes a lot of patience cooking this.....a longggggggggg..time..... to cook.

Tips: Get good grade dried prawns. Mine were left overs and tiny....
I ate my first portion with a piece of white bread..oo la la...

You may also wish to try this recipe too http://www.penangfaces.chanlilian.net/sambal-hairbee-plus-petai/