Things You'll Need
Instructions
Buying Custom Themes on Xbox Live for your Xbox 360 Dashboard
Turn on your console and log in to Xbox Live. You will need to boot up your Xbox 360 console and log into your profile and into Xbox Live in order to download themes.
Enter the Xbox Live Marketplace. Once logged into Xbox Live, use your analog stick and scroll to the left to, “Xbox Live Marketplace”.
Enter the Game Store on Xbox Live. Scroll and highlight the "Game Store" and press the “A” button to enter it.
Enter the "Themes and Gamer Pictures" section. Scroll down to the "Themes and Gamer Pictures" section of the Game Store and press the “A” button to enter it.
Select themes and buy them. You can select themes by a number of different categories, the best one being “All Themes." Scroll to the "All Themes" subcategory and press “A” to enter it.
Shop for a theme and download it. Shop around for the theme that you like. Some will be free and others will cost money. Press the “A” button to download a theme that you like, make sure that you have enough Xbox Live points in your account to buy it.