The Roslyn's Cash Register has with an NPC clerk with it, so do not clone it or the NPC will not work anymore.
It comes with the following files:

2 .iff files  -  Put these files in either the UserObjects or Downloads

2 .cmx files
2 .skn files
2 .bmp files  -  Put all these files in the Skins



The dress is made from a mesh from Jeromy.
http://jerome.simfreaks.com/

The head is made from a mesh from Frilly Sims.
http://www.frillysims.com/old/