So if I tell the truth about everything, which I plan on doing, and don't have any real issues, I should be ok?  It's just the fact that I've heard many people say that even if you are truthful, the machine can read your nervousness and fail you.  The reason I am so nervous is because this is for a career that I have worked hard for, and it comes down to this.  If I pass, I'll have no worries with the rest of the journey, but if not, there is no way any agency will ever hire me.
Edit:  I guess I'm just stressed.