This is the Junktown entrance section of the map of the wasteland presented by:
Here is the entrance. You can only get in during the day unless your very convincing. Also it is very wise not to sneak and hold a weapon well walking around. Talk to Jacob the gaurd lutenant located at the enterace, he can help you out. Then if you want money goto the Docs house and talk to the little carivan driver about picking up and taking supplies to bob in the hub (Bobs inguana on a stick). Go and talk to bob about where he gets his meat, if he trys to blow you off tell him you will go to the police. He will ask you how much you want to keep quiet. Then form now on you can get 100$ a week from bob.