You can also add in new Artworks via Google Picasa™ (http://picasa.google.com/) if you are a Picasa user. To do this start Picasa and select all of the images you wish to add so that they are in the Picasa selection bar as shown below.

Then click the "Artfolio" button located at the bottom of the Picasa window as shown below.

You will then see these images appear in your new Portfolio. You can now Edit these new Artworks to add in Titles and so on.