HIPS for the Assassin Kit?

Hail fellow gamers. The title of this post may be misleading, as if I'm asking for some kind of mod that would grant the Assassin HIPS at level 8 or some such, like in NWN; but that is not the case. I am using EEKeeper to give the "affect" of HIPS, copied and pasted from a SD, to my assassin. The resource values differ, I've tried copying and pasting what is in the assassin "affects" into the "stealth skill" (hips) and changing parameters to no avail.

Basically, my question is... how the hell do I give my assassin HIPS?