Purchase and download Playbook apps

Question

We don't use a Blackberry phone.  We have a Playbook.  How then do we get access to the apps? 
According to this site, the first step is to install the Blackberry App World plugin.  The second step is to connect your Smartphone, and I presume that's a Blackberry phone.  Since we have a Playbook and not a Blackberry phone, we're not allowed to proceed.  But in reading the threads below, it appears a fair number of Playbook users actually buy and download apps for their Playbooks.  How do they do it?

Answer 1

Here's a fairly detailed description of what happens when I get an app; I hope it gives you an idea where the problem is in your process.
When I turn my PB on, the first screen I see (after the balloons, etc.) has five icons at the top right; the middle icon is a quarter circle with some green arcs indicating that wifi is on and connected (if it's not, I touch the gear wheel which is the rightmost icon, select Wi-Fi from the list on the left, make a connection, then go back to the first screen). On the next line either All or Favorites is highlighted, and the App World icon is in the third line. I touch that, and the App World display opens up. I use the search window at top right to find Tetris, and touch to open the description window. I touch download, and the screen shifts to the downloaded apps window, where there is a progress bar showing that Tetris is downloading. When it's finished, I close the Apps World window, which brings me back to the first page, which has icons for all my installed apps. I make sure All is highlighted on the second line, and swipe to the bottom of the page, to find Tetris.
If the app is not free, the Download button on the description screen is replaced by a Purchase button, and touching it opens a login window asking you for your BlacklBerry ID and password. The next window gives you the detailds of the purchase, and a chance to set up / change your payment method.  When that is complete, touching the Buy Now button at the bottom of the window takes you to the downloaded apps window, described above.
Now I have to go and learn how to play Tetris.  Once again, good luck!