I understand that you are frustrated, but understand that most people are not having the same problems. It all comes down to gameplay style. If you are impatient or not interested in being observant - if you just want to hack and slash, you're going to miss stuff and get stuck. Remember that not everyone plays the way you do.
And, loluz, you admitted to having the game illegally, so don't start that again.
To answer the original question:
The controls to open the large doors to the Lady Luck are in a small glass overlook directly behind the bay the Lady Luck is in. You can see catwalks leading to it. There is also a back hall that goes into that control room, that's how you need to get in. To do that, travel around the catwalks until you come across a large elevated room with several windows. There should be Rodians and others firing from the windows. There will also be a turret firing down at Lando. Take out the turret and jump up into the room through the space left by the destroyed turret. You now have access to the back tunnel I mentioned previously. This really isn't too hard to figure out if you explore enough (in fact, contrary to some of the complaints I read here, this is the first I've heard of someone not being able to find the Lady Luck) It should be pretty clear and easy from that point on.
Michael Chang Gummelt