Complete Deal with NCR.

Complete Deal with NCR is a quest in Fallout 2.

Walkthrough
As a formality, this quest only requires that you talk to President Tandi, informing her that the squatters at Vault 15 will cooperate with the New California Republic, and accept their presence. The end results being, Zeke gets a spiffy new house, the squatters get a life (food and water), and the NCR launches its expansion campaign in Northern California.

If you work out the deal, you will receive a $5,000 reward from the NCR, instead of just $500 for getting the computer parts free-of-charge.

Warning! If you retrieve the computer parts from Vault 15 without having completed the deal with NCR first, you won't be able to do this quest, as you can no longer speak to Tandi.

After completing this quest, Zeke will ironically say that he hasn't got enough food to survive, even if the NCR helps the squatters.