I have no idea what to call, Vista photo preview mess up, help please

Here is a photo of my current problem you will notice some missing spaces of the right click menu
including the preview button....




its vista, yea, and restore option is not available...

[edit on 17-4-2008 by ragster]

there are ways to modify that list. i have never done it manually, but maybe this will give you a clue to whether or not you want to even attempt it:

www.tucows.com...

as he says at the bottom of the article you can add your own entries as well. you'll need to do some research to see how to do that. you might be able to just duplicte the preview entry from another computer's registry.