Change the start up and Shut down screen of ur Windows OS

Startup Screen

Create a 320x400 bitmap file in the root directory and name it as
LOGO.SYS
You can use LOGOW.SYS file in the Windows directory as a starter.

Logoff Screens

There are many system files that constitutes Logoff screen. They are
actually bitmaps 320x400 that just have a different extension.
The hidden file in the root directory LOGOW.SYS is the 'Wait while
Shutting down....' screen.
You may now change your shut-off or Reboot screen.
Make two new image files of your choice (24 bit bmp) and name it as
LOGOW.SYS and LOGOS.SYS and replace via actual windows file by this two.
But make sure that
they are of the same
size.