Take a boot such a time on your machine?
I think it is just a bitmap in one of the systemfiles and you can edit it like the same way as in Windows XP 32-bit. But the bitmap could locate elderly in the file because you face 64-bit code.
Just use a HEX editor (search for the BalusC server in the Netherlands, there are translation pages, but Dutch is in the computerworld almost English), so compaire the startposition of the bitmap and insert the custom image into the file. It must be exact the same size and resolution or it will fail utterly!
A hard job you choosen for.
Some nasty things happens! The server is down forever.
It was a very, very usefull server with lot's of professional information. No, this could not be true
Here: (also in English!)
http://balusc.xs4all.nl/bye/bye.html