you can try using the kotor savegame editor (KSE) that is posted on this site to edit everything about your game.
the version on this site is outdated though, you can download the latest version here Link
once downloaded you will need to direct the software to where your kotor/kotor2 saves are stored, which would most likely be C:\Program Files (x86)\Steam\steamapps\common\Knights of the Old Republic II
to do this just run the KSE software. Once open there will be a dropdown list labeled 'SAVEGAMES' click (+) and you will have two more options dropped down labeled 'Knights of the Old Republic' and 'The Sith Lords'. Right click on 'The Sith Lords' and select 'Change Path For The Sith Lords'. then find your kotor2 directory through the steam folder and select OK.
[Edited by dstates, 1/17/2013 2:30:10 PM]
[Edited by Sutek, 1/22/2013 7:20:03 AM]
are you running the steam version or the retail version of the game, and on what OS?