How can I create my own Xbox 360 theme?

Question

How can I create my own theme for Xbox 360? Is it relatively straightforward with the use of software (either on the Xbox itself, my PC or a combination of both). Or is there a huge process like when submitting games to the arcade involving approval, assigning points for purchase, etc?

All I want to do is use my own background photo/wallpaper.

Answer 1

This YouTube video details how to add your own background to the Xbox 360 dashboard.

Essentially:

1. Create an image of the correct dimensions (JPG format only).
2. Put the image onto a portable device, or connect your Xbox to your PC.
3. Navigate to the image you've created via the Xbox .
4. Select the image and press Y to assign it as your wallpaper.

Hope this benefits someone. Valid as of the Xbox 360 software version being used 14 / Feb / 2012.