The Moon Comes Over the Tower

 is a quest in Fallout: New Vegas.

Quick walkthrough
Use the terminal upstairs and to the left on the main entrance into the Lucky 38. Bar section.

Detailed walkthrough
As you enter the Lucky 38 Casino turn left and head up the stairs to the V.I.P. Lounge. The terminal you need is behind the bar. Once you try to access the terminal it will give you an option to bug the network. After you choose this option and head back outside. Emily should be at the bottom of the stairs. If not try immediately to the left near the gate to the next part of the strip.

Reward

 * +500 XP
 * (5) Stimpacks
 * (2) Doctor's Bags
 * (2) Super Stimpacks
 * (2) Med-X
 * (2) Today's Physicians

Bugs
After completing the quest Emily will remain outside the casino and you can talk to her to learn about the first attempt on hacking Mr. House's network. A 35 speech level dialogue option eventually becomes available that will remain in the dialogue list even after granting the player the reward for selecting (experience, completion of speech towards challenges). This allows the player to get credit for completing speech challenges (the experience points for completing the speech option is only given once however). Note that ending the conversion will block any further communication (and thus exploitation) although Emily will remain in front of the Lucky 38. (360)