Stupid newbie question

The answer may be obvious and no-duh in nature, but I have none the less failed to figure it out. A search through the text files provided in the FAQ as well as a manual search through the MPQs using WC3 Viewer proved fruitless. Therefore, I come before you all to make a simply inquiry:

Where is the Arthas wealding Frostmourne skin?

In the same place where the Arthas not wielding it is located.

It uses the same skin, but Frostmourne is has its own skin elsewhere.

Ah. I thought so.

Basically what I can do is edit the normal Arthas skin with the hammer and it'll apply for his skin with Frostmourne?

yes

Score. Thanks.