How do you change the writing in Google to somthing else?

For example, in stead of it saying Google it will say my name. How do you do that? I've seen it done before... i just don't know how to do it.
How do you change the writing in Google to somthing else?
You can't %26quot;really%26quot; do it.

But there is a site that messes around with it.



www.007google.com