Will there be even more changes?

I have an interview in 2 weeks.  Really, board of directors, 2 weeks!  That's a long time to sit and wonder/worry about what I'll say and how they will see me.  I know several people on the board.  You know, several, like half...  Will that help or hurt my chances?  Just how many people will be there to interview me?  How in the world am I going to convince them that I will be great at something I've never done before?  I'm worried that I will look stupid in the interview, I'm worried that they will not hire me, I'm worried that they will hire me... Is there anything else that I could possible worry about?