Look at it this way. If a person asks a question without first disclosing what he already knows and what he has already done, a person trying to help may very likely retrace steps and procedures that have already been covered. It's a waste of their time due to the lack of information provided, and is an inconsiderate way to ask for help.
I wasn't trying to be mean, but my time is valuable to me. When time is wasted doing the same procedure that someone later discloses "I've already done that" it is disrespectful to those trying to help by not advising them up front as to what they have already done.
In other words, it would have been much more helpful to say in the beginning that you had already checked the site, found that it had a player capability, but were still curious whether anyone that had the program could tell you if it included PowerDVD.