mazzarooney

You can get the HK-47 parts after defeating HK-50 droids, finding the pieces or buying them from merchants, like on dantooine.

cheating-is-good

In order to get all the parts for the hilarious assassin droid, HK-47, you will have to play through the game. Continue through the game until you reach an area in the storyline where you fight the silver droids, HK-50. After every time that you fight a group of them, you should get a part for HK-47. There are 4 parts in all. As for the holocron on the Sith world of Korriban, I do not know what you are talking about. There is a special door in the back of the Shyrack cave that you can go through if you are strong enough. I suggest you go there to see if you can go through it. Usually, I wait till Korriban is the only planet left that I have not visited. When I visit there, I am always on a high level, so I can go through the doors. About Brianna, yes, you can be in love with her. You can fall in with Her, Mira, or Visas(Rawr :D). All you need to do is talk to her continuously throughout the game so that your influence over her will rise. If you talk to Visas a lot, she will get mad, so limit your conversations with her. Hope this helps.