Hi Jack, One of the reasons that I personally prefer the Newport program is because it is not as automatic as PCA or Automatic Investor. Using all 3 programs you should come up with practically the same results. The only differences being caused by differences in rounding in the different programs. The biggest difference is that with PCA and Automatic investor, when you download a history for a stock/fund you are presented with instantaneous results. You do not see how those results developed. What you do is is input the name of the stock, the period of time you are interested in observing, and how many shares you would have purchased. Then, instantaneously you are give the the amount of profit/loss you would have achieved, how many shares, and how much cash you would have. If I were to look for an analogy, I would put up walking into a math class knowing nothing about square root. The teacher writes on the blackboard, what is the square root of 144. the answer is twelve. The information is correct, but if you didn't know anything about square roots, you still don't know how that answer was obtained. I am sure that PCA and Automatic Investor are very good programs for some people who want quick answers. I just don't feel that they are very good as learning tools. With Newport, when you perform a historical simulation, you get to enter each price you see the results of that change each week you make the decision whether or not to follow that advice At the end of the simulation you have spent more time, but IMO you will have learned more about the mechanical operation of the AIM "money machine." I believe that Bob Norman does offer a trial disk for Newport but I am not certain. You would have to check with him. I have demonstrated the AIM investing system to many people using either the PCA system which I own or Newport which I also own. With PCA people are impressed with AIM's results but are usually skeptical. With Newport you can see the light bulbs going off as they see and understand how AIM works. I have to admit that I am probably somewhat prejudiced. when I purchased Newport the other two programs didn't exist. I've been using it for years and have grown accustomed to it like a comfortable pair of slippers. Hope this helps. Bernie |