Replaceing Startup & Shutdown Screens
The pictures that tell you to "Please wait while Windows is shutting down" and that "It is now safe to turn off your computer" can be replace these with your own designs:
Make duplicates of the files LOGOS.SYS and LOGOW.SYS in a temporary folder. These files are located initially in your Windows folder. LOGOW.SYS is the one that reads "Please wait while...," and LOGOS.SYS is the one that reads "It is now safe to...,"
These files are just standard bitmaps, so rename the extensions of these duplicates to .BMP.
You can use any graphics editor to edit these files, such as MSPaint, Photoshop, or Paint Shop Pro.
The files are 256-color windows bitmaps (RGB-encoded, but not RGB color), 320 x 400.
Since the aspect ratio (width / height) of these files are not standard 4:3, like most computer screens, the bitmaps will appear vertically elongated.
To make your new design conform to this aspect ratio, resize the bitmap to 534 x 400 while you're working on it. Make sure to resize them back to 320 x 400 when you're done.
Save your changes, and rename the extensions of your new files back to .SYS.
Last, copy the new files back into your Windows folder. It might be smart to back up your original files.
While you're at it, you can create a startup screen as well (using the above method).
Just call the file LOGO.SYS, and place it in the root directory of your boot drive (usually C:\). Note: If you're using disk compression, like Stacker or Doublespace, you'll need to put the file in the original boot drive (sometimes H:\).
To remove the startup logo altogether, edit the file C:\MSDOS.SYS, and add the line LOGO=0 to the Options section. Note: This will only work, for some reason, if you have a custom startup screen in your root directory. For more information, see Contents of the Windows95 MSDOS.SYS File. This setting can also be changed with TweakUI, one of Microsoft's PowerToys.
Note: If you delete LOGOW.SYS and LOGOS.SYS altogether, Windows95 will exit to DOS instead of shutting down (more information).
Note: Some users have reported that the machine reboots instead of shutting down when these logos are replaced. If this happens to you, make sure the bitmaps are not corrupted, and using no more than 256 colors.
Note: If you're using DriveSpace or another disk compression utility, and want to create your own startup screen (as described above), make sure you put LOGO.SYS in the root directory of your host drive (which may not be drive C:\).