There's an updated version of this, check it here:
WHAT I DID:
I recolored the original no-hood version to its classic colors (The original one by ac.amir got black jacket outlines instead of red like in the original game)
I also converted the original playermodel to make a pedmodel. (There wasn't a pedmodel version in the original)
There are two version of this model:
playermodel - Your default skin, it replaces Niko.
pedmodel - It replaces a pedestrian model.
(check this more information and for the hood-up version by ac.amir: http://www.nexusmods.com/gta4/mods/62/?)