The only entrance is locked and requires a key to open. During the quest G.I. Blues, there will be two NCR troopers standing outside the entrance. In order to enter the building to talk to Elizabeth Kieran, a Speech check of 60 (or 30) from one of the troopers must be passed, or a key to the store can be pickpocketed. Conversely, the password can be learned from the missionary after answering three questions to convince him of New California Republic citizenship status. Inside, squatters receive free supplies from Kieran.
Finding the store is not easy if by relying on the Pip-Boy. Approaching it from town, guided by just the compass markers will not lead to the door. To get there from the Silver Rush, face north, cross the street and enter the small destroyed building in which Bill Ronte is or had been sitting. Take the door located on the ground floor. On the other side, head north, and then turn left under the freeway. Turn left and follow the road heading southwest, parallel to more freeway pillars. The building is on the left-hand side. Alternatively, follow the train tracks towards the building with the barred up blue doors. The NCR building is opposite the southeastern corner of this building, beyond the rubble.