Can you/How do you change the boot splash screen in Windows Vista?

When I had Mandrake Linux 8.1, I was able to go in and change the background login screen to just about anything I wanted it to be. This gave me warm fuzzies inside because I had the power to do whatever I wanted. ^_^



I know that it's possible to change this in Windows because it's done at the school that I work at but how do I do this at home? Is there an easy way for me to do it that won't involve crashing my system or somehow invalidating my OS?Can you/How do you change the boot splash screen in Windows Vista?
The only way I have heard about is hacking into a particular .dll system file with a special application



The way I know this is because I came accross lots of forum posts from people who had screwed up their folder settigns, lost icons, mangled desktops.



So - from that - I assume it is quite risky.

conceive birth control

Changing bed sheets