Go in the Stables, and kill everyone there. Be sure that you get the extra cash, etc. After you kill them, enter New Reno through the East Side. Go to the Wright mansion, and tell Orville that you've finished his quests. He'll ask if you can become a Wright Made Man. Accept his offer, and then go and become a Made Man. Now it's time to become a boxer and a porn star. Note that the two require specific primary skill requirements - if you've got Power Armor and decent endurance, then you'll have no problem getting into the boxing ring. In order to become a porn star, you'll need 8 strength, 8 endurance, 8 charisma, and (I think) 8 agility.
To become a boxer, go to 2nd street, and go to the Jungle Gym. Talk to Stuart, the little guy standing in front of the ring. Tell him that you want to become a boxer, and he'll register you and give you boxing gloves. You also get to pick your own name as well. Pretty much, just try to knock out all of the boxers. You'll also get to win a good bit of money as well. Now, you're going to become a porn star.
To become a porn star, take some Buffouts if your Endurance is less than six. Afterwards, talk to the Corsican Brother, and ask for some jobs. He'll give you a job offer, and then tell him the price of your movies. Choose your name afterwards, and then you'll become a star... a big, bright, shining star. You'll also receive some experience afterwards.
Go to Virgin Street (or wherever you left your car), and pick up one of the laser pistols from your trunk. Go to New Reno Arms in the commercial row in the late morning, and sell Eldridge your pistol for about $1500 and some experience. If you didn't get a Voice Recognition Module from the Vault City Vault, you can buy one from Eldridge for $1500 (choose the dialogue about the special item).
Now, leave for Broken Hills to install the air purifier.