Wow! I like this one. You can substitute your own startup logo by saving a bmp of the same size as c:\windows\logos.sys or logow.sys. It has to be the same dimensions and number of colors. See the following:

I hope someone is reading this because this is a really good tip. I got the above information from one of the tip files that Axcel216 wrote. He has a tip for everything you ever wanted to know - a real encyclopedia of information! And it's all in a .zip file available for download - about 500K. So I think you should hurry down to his site, http://www.mdgx.com/, and download this treasure trove of tips.