On your desktop there are several special icons with small marks. They might look like regular icons or nice buttons. Technically speaking those icons are folders that behaves differently.
You click one of those icons with name "4Photo". List of icons of photo-related applications popups below it. You choose which one you want to launch and just click on the icon.
You also can rearrange those icons, resize list, make it 1 column or 1 row or whatever you want. To add new item to it you simply drag'n'drop file there. It can be anything -- from shortcut to text document or web page.
When you hover you mouse over the icon name of application popups near it.
If you will do right click -- then regular context menu for that kind of file will popup.