Fallout New Vegas Dead Money help needed (Spoilers)

[Lostplanet22]

Euhm I know I was stuck their aswell but can't remember it exactly...

Tried to check an youtube walktrough?

http://www.youtube.com/watch?v=7lDvYp4o5FY
I am not sure this part helps you (maybe next part will) but if this will not help nothing will =p.