I seriously don't get it! The quest where you are suppose to helt Mr house leads to NCR disliking you. If I would like to have my good reputation with NCR, what to I do then? Do I just ignore the Mr house quest? But I can't do that because it's a main quest right? Where do I talk to NCR to do the quest for them?(Sorry for my bad english, but I'm just so confused!) :banghead:

They're both the main quest. They're different conflicting routes. You need to pick one.

To work for the NCR, you need to talk to the Ambassador. And after that, the Colonel at the dam.

Oh I see, but can I do that even if i've got the quest from mr House? and where is the Ambassador located?

It doesn't matter who gave you the quest. The ambassador is in the NCR embassy at the end of the Strip.

Oh right! I remember that he said something "that could wait" So I guess that's the quest Thank you!:)