The registry key that holds the changes that needs to be made can be found here:
Note: If this key does not exist, you can download the following registry file,
which you will want to edit before double-clicking to add into the registry.
full guide available here:http://www.howtogeek.com/howto/windows-vista/customize-the-manufacturer-support-info-in-windows-vista/
You can modify the following fields and put any values you’d like into them, with the exception of the Logo key, which you probably shouldn’t change.
he last important step is to either create or modify a bitmap file stored at the location specified in the Logo key, usually set to:
For best results, you’ll want to use a small logo file, preferably somewhere around 100×100 height/width. Also note that copying the file to that folder will require administrative permissions.