Well, first let me link you to this post
http://allnurses.com/forums/f99/thos...pn-243820.html
Then, I will say that you should try to sit alone for a few minutes before you enter the exam room. Center yourself. Tell yourself that no matter what happens, you will and have tried your best. Be confident in yourself. Check out eriworld.com for some good practice tests and review videos. I use Ealys review CD.. it helped alot. Good luck with it!