I need help installing the royal blue theme it looks all messed up can you help me?
What do you mean by "it looks all messed up"? Did you upload the images to the correct directory? Link to your forum?
Can we have a look at your website?
As said above, we can't really do anything unless we have a screenshot or even better, a test account...
You need to upload the folder with the images to your images/ directory. Make sure you did that, the folder that is the name of the theme should be uploaded there. Then make sure you Import the Theme in the ACP and select the .XML theme file.