Nik02 is my old nickname.
The new one is Flash76.
This mod is only a "snowfall" mod, so it only replace the rain by snow in the sky, but it dosn't add any snow on the ground.
You have to download the Snow Mod 2.0 (by jumbo0) :
This mod will add the snow on the ground, then only after you have to instal the "Realistic Snowfalls Mod v2.5 Photorealistic Edition".