As you should all know that the main mod was cancelled due to many things. So this is going to just be a graphical modification. Make sure you have a good computer if you wish to run it on max.
I forgot to add a read-me into the file but I will write this one up. Most people will know how to install the mod into the game but I will show you how to anyway.
C:\Program Files\THQ\S.T.A.L.K.E.R. - Shadow of Chernobyl
The link is for Windows 7 users.
Now if you do not have WinRar or WinZip you will not be able to extract the file you have downloaded so please download and install WinRar or WinZip.
Now place the file named "Gamedata" into where the link leads you.
Now you will need to edit the "Fsgame" file and change this:
$game_data$ = false| true| $fs_root$| gamedata\
$game_data$ = true| true| $fs_root$| gamedata\
Save and now you can play the game (This requires a NEW game.)