[Lowkei]

How do you do this mission. I spoke to carth untill he agreed to stop arguin with me and so he mentioned what happened to his wife and son, but i thought it was just a story i didn't know it was a mission. where is carths son and how do u activate this mission or is it just for the PC version coz im playing the xbox version.
Wile im talkin bout missions and side quests how do u activate mission vao's brother side quest because i came across him in the sand people onclave and rescued him so he went to work for the cerka corparation etc, but i can't seem to activate this mission again on my other games. I have spoken to mission untill she won't speak to me anymore but i so far i havn't meet him in the sand people onclave. If i remember rightly i think i spoke to someone on tatoowine about a missing miner that turned out to be missions brother (i think thats how i activated the quest), but i can't remember who the person i spoke to was. Help would be much appreciated, cheers guys.
P.S. is the sunary murder trial jolees side quest?