When you first go to the docks in the bunkhouse first door use stealth and open it a couple of thugs will talk about breaking in to voggas vault then go to the cantina and buy some juma juice and then walk over by the twi liek recruiting dancers he will hire you to dance for vogga. after you dance vogga falls asleep then put the juma juice in the kath hounds bowl and theyll go unconcious then open the door and there is a lightsaber in one of the metal boxes i think.