In the shader you want to use the 'entSkin2' (entity skin 2) or 'mtlSkin2' (material skin 2) texture.
The way to scroll/shift the texture is to change the texture coordinates.
In the pixel shader there will probably be something like this...
return tex2D(sampler,inTex);
...so just modify the 'inTex' parameter...
float2 coords = float2(inTex.x + 0.5, inTex.y); // example shift in x
return tex2D(sampler,coords);
