QUOTE(King Coin @ Feb 12 2011, 10:48 AM)

I had the chip because I had just taken it off of Caesar's corpse.
Yes Man was installed into the computer.
I think Yes Man gives you the quest after he takes you into the basement of the Lucky 38 and shows you his (formerly House's) plan - had he done that yet?
Not sure if that "Wildcard" quest he gives you with all the factions you are supposed to check out has one that would eliminate that step
- or - that group of quests cannot be completed without failing some of them (based on your choices) - you may possibly have failed a quest that had to do with that bunker. - you can find out: go to your journal for quests and read the screen on the right for any of those main questline quests given by House, Yes Man, or Caesar - look for the place that says to access the bunker and either upgrade or destroy the robot army. If it is in the failed or completed list - something you did/choice you made ended that option for you.
If neither House or Yes Man came up on the screen to access the bunker, something possibly was done out of order, closing off that opportunity.
As far as equipment goes, you didn't miss much - a laser rifle and some ammo from the robots that attack you, I think a couple pulse grenades or mines. It is highly radiated, even with the radiation suit I got sick and had to leave, go to Goodsprings for a cure, come back. (ran out of Rad-X and Rad-Away)
I trapped most of the robots in one room and then threw in a pulse grenade - done. To destroy the robot army you have to blow up generators.
When I arrived at the fort I had not made up my mind on factions - just didn't like the idea of the Mohave or Vegas being run by robots. They give me the creeps.
House's screen turned red, so I knew he was going to be my enemy when I returned. I had to do something about that - so I used a stealth boy and sneaked up on all the robot gate guards and disabled them. The four guarding the inside gates in the area around the Lucky 38 cannot be dismantled - but after I did the next steps I walked out and they were not hostile to me at all.
Inside the Lucky 38 I sneaked up and dismantled all the robots (including Jane, but Victor could not be disabled) - then used that computer terminal at the window behind House's monitor to cancel the guard robots command to attack me.
After you open up the secret entrance to House's chamber there are two more guard robots that can't be dismantled and remain hostile - Victor was still showing red.
I was not able to go back into the 38 to see if they would attack me later, my game crashed and all the saves became corrupt. Victor is supposed to hunt you down like a dog, and I was looking forward to seeing him in a busted heap.
As far as I know, I still would have gotten my nice suite at the Lucky 38 - I will find out when I reach that stage again because I plan to re-enact and see what would have happened.
Have you done the final battle at the dam yet? My game crashed before I could, and boy was I ticked !!!