First you must make sure you know your GSPID you can find that by following this tutorial

Next you must use the URL found from above and look at the number after GSPID= (Ex. http://www.nintendowifi.com/gaminghub/MetroidHuntersLicenseFrame.jsp?gspid=67552417 Mine is 67552417)

Next copy the following into your Myspace or Webpage (Where you want to place it, so if you want to put it in your Who I Would Like To Meet section in myspace you would paste this there)

<iframe
src="http://www.nintendowifi.com/gaminghub/MetroidHuntersLicenseFrame.jsp?gspid=Your GSPID HERE&locale=en_US"
width="175"
height="305"
scrolling="no"
frameborder="0">
</iframe>

And that's it! everything should work after that.