Yeah sure thing man. Ok first download both parts of the pack (posted in the games section , it also containes a few other mods) and then download that 7-zip thing (also in the same thread). Once you have done that open 7-zip using your start menu and with in the list that comes up find the first part to the pack. Next you have to extract everything in the Gamedata folder to the Gamedata folder where you have STALKER installed. If you don't already have one put the whole gamedata folder from the mod into STALKER and it should use the whole thing then. That should be it then , do not worry about the second part of the pack because you can't use 7-zip on it. To be honest im not sure what it is for but I keep it around anyway just incase it is used by the mod from where it is some how. If you have any problems don't hesitate to ask me!