Well, all I did was take the ATI tests and our program also required an NCLEX review. I took the Rinehart review the 2nd week of May. I followed the CD that came with it and I honestly think that it helped. Just answer questions, questions, and more questions...you really never know what you'll be tested on.
Our nursing school also does the ATI NCLEX predictor. It predicted that I had a 97% chance of passing on the first time and I did, with 75 questions. Everyone else that took it from my class has passed and they all had between 94- 98% on the ATI. Good luck!