Knowing that our software comes arunning BDell555 says exactly the same thing I do but he gets away with it he writes in far better English than I maybe why Not wanting to get him in dutch with you boys to be sure but his stuff almost paraphrases mine of course he probably never gets into the AIDS stuff check out the average age of death for gays 39 AIDS 42 or 43 nonAIDS Why the 43 for nonAIDS let Mastcell mull that one over put his medical research phd to some good use He you might want to check out the 39 42 vs 75 statistical tests with one of your math friends there are a couple of competent ones here on wiki