"[isotonix] Kitsune ni Yashiro" Playing the Game?

Heys all. ^_^

I'm having some difficulty trying to get this game to play...

I've downloaded both parts, but what do I do from there? I don't know how to extract files from a ".7z" file....any suggestions?

Get 7-Zip and use that.

7-Zip Website

You could have just googled it. >_>