This is the first in a series of eight quests which leads to one of the many Fallout: New Vegas endings. Mr. House tasks you to retrieve the platinum chip from Benny and use it at The Fort to upgrade the Securitrons, then bring it back to the Lucky 38 so that Mr. House can upgrade them.
For part two of the quest, you must travel to Cottonwood Cove and take a raft to The Fort, where Mr. House's secure bunker is located. If you already collected the platinum chip, Mr. House will return it to you; if not, you'll need to get it back from Benny when you get there.
Mr. House asks the player to convince the Omertas to ally with Mr. House. The player can achieve this by completing side quest How Little We Know, or killing all the Omertas. Upon doing either, the player must then return to Mr. House.
Protect President Kimball from an assassination attempt on Hoover Dam. Follow Ranger Grant to the observation deck, then tell the Ranger that you are ready and a Vertibird will land above you.
The player must install the override module at the El Dorado substation. Several NCR troops guard the substation and warn the player that there will be trouble if they enter.
"The house always wins" is a popular saying describing how casino games have an inherent bias toward the casino, or "house" (described as the "house edge"), so that in the long run the casino will nearly always come out ahead.