You didn't ask about software.
You asked about how to pin applications to a 2nd monitor's taskbar and were then informed you would need 3rd party software to do so.
Different applications handle this differently under a given OS (assume Win7). Windows Media Center asks you, and gives you a chance, to dedicate a 2nd monitor to it. You can even restore the WMC window from full-screen, and then drag it to the other monitor, but it will always start on the second monitor.
A lot of these crossroads about "which forum to use" are close calls. And the solution to our friend's problem was -- indeed -- "Software."
Now, if I decided to post a thread here about how I got laid at the LA County Fair after dark in the parking lot, I'd not only expect a complaint or criticism -- I'd expect a lot worse for my participation here.