I took it about a year ago while being a guinnea pig for the FAA. I thought it was pretty easy, mostly computer-friendly stuff as I recall. Try to get as familiar as you can with the number pad on your kepboard, that'll help in the "vectoring" game. There is another game which tests your ability to multi-task, try to keep a good mental picture of what's happening at any given time as the game will stop to ask you awareness questions randomly.
Other than that just go with whatever practice excercises are being offered by your school (I assume you're a UND grad). Good luck, and don't stress about it, it's very easy.