How do I change my Windows XP boot screen and skins?

Hey. I downloaded some boot screens and skins from a website. I just don't know how to make them appear in my computer. Does anyone know? Thanks.How do I change my Windows XP boot screen and skins?
start,control panel,display.you might need to know where you downloaded them to.How do I change my Windows XP boot screen and skins?
http://www.wincustomize.com/



You can download all the Theme addons you want from there :D



Or to be specific go to: http://www.wincustomize.com/skins.aspx?libid=32

and download the Bootskin XP Client and the theme of your choice :D



If you already have the themes you want, just download the clients.
';Nik...'; has a site, but be aware that modifying this aspect does not always work as smoothly as you'd like it to.

Before you do any of these mod's, back up all data.

I tried about 4 of them %26amp; had zero luck, with busted system left as a remnant.
use tuneup utiltites 2009 it works well both on vista / xp and it speed your computer by 80% it is a really good software