I imagine you are talking about this mod: http://lucasforums.com/showthread.php?t=139157
If so, the mod is for Kotor 1 only.
Did you read the readme file inside the .rar file? all the instructions for installation are there. Read them carefully.
You don't need cheats to get the items: go to the cantina on Korriban after the Leviathan and speak to the sith. If you still want to get the items before that, you can use KSE (http://www.starwarsknights.com/tools.php