What's the problem with your grass..? You just copy the grass folder over, that's it, you're done. The moving script is in the grassmat i think..
material GrassMat
{
transparency_casts_shadows off
receive_shadows off
technique
{
pass
{
ambient 0.75 0.75 0.75 1
diffuse 0.05 0.05 0.05 1
cull_hardware none
cull_software none
alpha_rejection greater_equal 128
texture_unit
{
texture grass.png
wave_xform scroll_x sine 1 .1 0 .1
}
}
}
}
THAT is what you need. that's it. You may also need ambient and diffuse, but that's about it.