First, sorry for my bad english.

NachoCraft is a simple texturepack.
For some textures, like water, or lava you'll need the MC Patcher for minecraft 1.2.5

INSTALLING:

First klick the downloadlink on the right and download the texturepack.
The press the ''windows-key'' and tape in this: %appdata%
then press "enter".
In the Roaming folder you'll see another folder, called ".minecraft"
double-klick it and put the texturepack into the "texturepacks"-folder.
Now open the MC-Patcher and klick on "patch"
After that you can close the Patcher
Now open Minecraft and klick on "Texturepacks"
Klick on NachoCraft and then on "Done"
-Have Fun-

You can download the MC Patcher ---> here <---