Just thought I might share some insight to you all.  This is how to talk to dolarc, and yes you can do this quest if so desired.
Dolac wouldn't talk to me at first, so what I did was try the command: "/unstick" Don't put in the quotes. Anyways I said this while running right at the jail cell. This got me into the cell. Once inside I could talk to Dolac all day long, Bad part about this is I was trapped inside the jail. A couple of people took screen shots of me laughing there A@@'@ off. Yes I was a criminal. I tried everything to get out. /unstick will get you in but not out. /eject will not work at all. The only thing that eventually worked was a CH friend got the idea. A kimogilla is so large it does not fit inside the walls. So she befriended the pet to me. I told the pet to follow. It worked now me and the kimo were behind the bars. Then me and the ch dueled. She had her pet attack, and well the pet was weak, so after taking off all my armor and doing some tumbling I finally died. This sent me to dath science outpost for some cloning. Then when I got back I had the waypoint to the mission. Be forewarned these missions aren't the easiest. Mission number 1: Talk to a thug, basically since most of us have -5000 thug faction, ya have to make a macro that says "/peace; /converse" Which also put on your weakest weapon. ie. Something that won't kill him, he has no hitpoints. Then run away and hit the /peace /converse. Oh one more thing, when you do this mission there is always at least one nightsister that spawns with the thug/Dark Jedi Knight/ or Dark Jedi Knight Master. If you have good nightsister faction they'll actually tank for you for a bit. However if you have bad faction get prepared to take on both of them at once. Well if ya have any questions just ask. I did this quest twice now. Got 2 carbines(one with mind dot, the other with action dot, and one spraystick with absolutly no good stats what so ever.

The jedi's are easy, I always tank it. I am just a Master TK/Master Commando and a little bit in pistoleer. Tips for tanking this mob, yes you need armor. However just make sure to intimidate it. You keep these mobs intimidated they fall easy. Well I guess that's true on all mobs, but the whole fight my doc went thru a total of 10 stim b's. (Not 10 crates or 10 stacks) but really he only used 10 charges.

now you have to kill the things with dots. I don't see any other way. They are 90% resist to everything. Therefore use a flamethrower(or 2) and health bleeds. If you can bring a combat medic I'm sure like a Master TK/Master commando, and a master combat medic/pistoleer(CM/Pistoleer is by far the cheesiest combo ever) Anyways the jedi's could be duoed with these 2 combo's. I was thinking also if I dropped the pistoleer and trained in medic. I could probably solo this mob. However pistol xp is just too painfull to get(you have to hit the mob for more then a second). Well sorry about some of the babble. But I hope there is some useful information you can get from this.

Diue, Diue's, Karma
BOHICA A proud sponser for fate

I heard there was a rifle loot item at end of quest went there now the npc wont talk at all to me what gives?                                                                

We thank you all for the info Jockerby!

One small correction. I could only get the second part of your fix by doing "/npcconv select", with out the "mozo" in the middle.
                                      

This seems to have changed - u have to find Mozo first now.

This seems to be imp only.

I found Mozo stuck in a wall ( had to use /conv Mozo).

He was near where Dolac is in the corner of the wall of the guard tower.                                      

To talk to mozo do the following ...

/conv mozo whilst stood in front of the guard tower corner (as if facing the triangle of the npc on the overhead map)

To select his mission as you can't see the option box ..

/npcconv mozo select

You may have to do this twice if you already have a mission from someone else.

You then get a WP which is the 1st of 3 missions from him.

1st Tera Kasi Master
2nd A warlord
3rd Some caveman looking guy (tough as old boots)

Once you've done these you can then talk to Dolac Legasi and get his 3 missions which are very very hard.

Ahhh; Guess I should tell you were he actually is. He's actually just SE of the building Dolac is in. He's "sortof" in that guard tower in the corner.  Very disapointing :(                                                   

Well I found Mozo... thats the good news...

Bad news is that he is in a wall or something. He doesnt show on radar but he will show on the overhead map. If you use /conv mozo you can hear the diaglog to start a mission but you cant see the menu to say yes or no to the mission. Best I got was a quick flash of it at one point.

So for the moment I believe this mission is broken. Hell Dolac wont even talk to me unless I talk to Mozo first

Looked all over the Prison, even in the cave.  I cannot find Mozo anywhere. Does someone have a waypoint on him, or know where is mostly is?                                                   

Looked all over the Prison, even in the cave.  I cannot find him anywhere. Does someone have a waypoint on him, or know where is mostly is?                                                   

the third and last one has 2 night sister protectors a night sister spellweaver and a dark jedi master. you only need to kill the master to complete it.                                                   

WOW, great post Murphy.  I'm glad to see some of the cooler sounding mission's are working. Thanks again                                                                

You return after the 3rd mission and to get 1800 credits, 30 imp fp, and lose 15 nightsister faction.

Dolac says "There are many evils in the universe. The Sith are but one of these. I am another. Remember that the light cannont exist without darkness.

You talk to him again and he says "You've conquered the darkness. Or have you? Can anyone ever truly do that? now when the darkness lives inside of us. You can feel it, can't you? You of all beings should be able to feel it."

There are no more missions from this NPC. Currently looking around the imp base to see if a new NPC is around to get missions from.

Onnce you get to the waypoint you find a Dark Jedi Knight waiting for you. He hits for 1.7-2.8k usualy around 2.3k on an AT with heavy armor. Did more damage than a couple of Dune Kimos on my AT. Once killed you get the message to return to Dolac Legasi. On her corpse she had a sith altar and Holocron Splinters.

When you get back to Dolac he gives you 450 credits 10 imp fp you also automatically turn in the sith altar you looted from the corpse.

Dolac says "You have brought me the crystal shard. Excellent. I must study its secrets before I can help you fight the wraiths.

Mission #3

Dolac Legasi says " The shard has revealed the sncient evil behind these wraiths. Do you think you can stop it? Do you dare try?

You say "What is this ancient evil?"

Dolac says " The shard was a piece of a Sith Holocron and it is a Sith that you go to face now. This agent of Evil has enslaved many souls on Dathomir. This dark warrior can enslave the minds of others."

You say "Is this how the inmates were allowed to escape?"

Dolac says "Yes, the Sith took posesion of their bodies and they were none the wiser. Prison guards would wipe the evidence away and none would remember their actions."

You say "You've known this all along haven't you?"

Dolac says "Yes I have awtched it happen time and again. This Sith wanted my allegiance but I refused to give it. I was to powerful to be controlled like the others so the Sith warrior was making arrangements to have me destroyed. I couldn't allow this to happen. Shall you go and end this menace once and for all?

You say "Yes

Dolac says "Go to these coordinates and face the master of these wraiths. This sinister force is strong with the dark side. It is not likely that you'll return."

Upon Completion  you get 350 credits and 10 imp faction points. He then gives another quest

Dolac Legasi Says You'd like to know where the 'place of shadows' is, wouldn't you? And what the shadow stone is? Perhaps I know of a place here this exists. But do you truly wish to go there?

You say "How do you know where the shadow stone is?"

Dolac Legasi says "Very well. Bring me the shadow shard and I may be able to help you solve this mystery. You can only get the shard by chattering the shadow stone. The wraits will try to stop you."

Dolac Legasi says "The shispers told me of course. I am not without my own skills, stranger. Why do you think I am here? I was considered far to dangerous to be allowed to remain free, yet no one dared to execte me. Isn't that odd?

You ask "Who sent you here?"

Dolac Legasi says "The Emperor, who else? He declared me a threat to the Empire and had me imprisoned here. Don't you find that amusing? THe Emperor declaring me a threat? I chuckle everytime I think of that."

You ask "Why did the Emeror feel you were a threat?"

Dolac Legasi says "Perhaps because he knew I could one day challenge him for control of the Empire. I was close to finding the key that would have allowed me to do that. But that is another matter..."