NEED HELP ==Spoilers==

[black mask]

Ok I've play through Duxn (the moon) but I can't seem to get past this one point on Onderon, I am so lost, I am now in the city and have to find the doc. I have found out he has been arrested, and seem to be stuck. I don't know how to do any thing now, and I can't go back to duxn.
Also, can anyone tell me where to get the droid chassis for HK-47, I have all his other parts, but need the chassis.

[Venoms]

for onderon you need to go to the doc office ad find out he is arrested. then go to the gaurd outside the merchant quarter about the doc (next to the turret tower), he activates the investigation. then go to the bar and talk to kiph about it then to the nixxon (i think that his name hes got a red shirt and plays pazaak) outside to the broken droid, then go to the beast rider thugs in the bar, then go to the droid vendor then back to the nixxon guy then it goes straight to the captain and you are done

[Venoms]

i know of four places to get parts, the robot vendor on onderon, the fishy vendor on dantoine, the droids on telos after crashing on academy and after t3 kills the hk units on nar shadaa.

[black mask]

Thank you, All I need to do now is get those parts, HK-47 here I come!