Question: how to use jsgme stalker?
Answer: Extract to your S.T.A.L.K.E.R. - Call of Chernobyl main directory.
Delete gamedata directory to remove existing addons. Then run JSGME.exe, click Tasks... then click Generate snapshot of game files. ... 
Create new sub directories in S.T.A.L.K.E.R. ... 
Install each of your addons to their new directories.