@ Rich: You are missing my point here. I am not actually trying to figure out whereabouts of the puzzle pieces I have collected but that altogether they fit in to give the entire picture. Again you are taking the wrong point from here, I didn't ask about MST as I was done with one source of test and was jumping onto another round but rather which test writers have the best repute here for being legit. And thanks Vince. Those were some handy tips.