http://www.renderosity.com/mod/bcs/index.php?ViewProduct=50912
This one is long, but I use it quite often for male ponytail hair, cause its low enough.
There is one by ali someplace that is nape of the neck low, but its really short (comes with a hat) couldnt find it for you at rmp though

and theres also this one.
http://www.renderosity.com/mod/bcs/index.php?ViewProduct=60812&Start=241&TopID=11219.44031.50029.