I agreed to the the installation of the Microsoft Office Live plugin and for that I must be punished.
Now every time I start any Microsoft 2007 Office Application I get the "Get Started with Office Live" window. Every time. I don't even need to check the box saying "Do not show me this message again", it's checked for me. Every time.
To eliminate this annoying, useless commercial, simply edit your registry. That's right, it's 1998 all over again.
Here's a link how to