This is a 3 piece weapon add on (a magic gem, and 2 broken pieces of a Lich staff). When you have each of the 3 parts you double click the gem and you will get the Lich Staff. You just drop these files wherever you put your custom scripts. Introduce them into the game in any way you want. They make a nice quest addition. I simply added them as a possible loot drop on the Lich.
3 pieces to assemble staff:
Together they create the Staff - LichStaff