While not related to the original "Duplicated Drives" issue this thread originated from, I thought this "question" would fit best in this thread, rather than hijack the 98SE SP3 thread.
Some discussion was being made of replacing the Start Menu banner bitmaps contained in EXPLORER. Bitmap 157 is used for Windows 98, and Bitmap 161 is used for Windows 95. Quoted relevant posts below.
LoneCrusader, on 12 February 2012 - 11:55 AM, said:
gerislamico, on 08 February 2012 - 05:04 PM, said:
Resources and Deputy PSD "to edit it to taste" of the image of Start Menu
FYI Bitmap 161 is ONLY used by Windows 95. Remember that the same version of EXPLORER is used on both 98 and 95 with the Desktop Update installed. If 161 is changed, then if that version of Explorer is loaded in 95 then the Start Menu will say 98.
So Bitmap 161 should be a nice gray-to-black-to-gray Windows 95 banner.
dencorso, on 12 February 2012 - 12:35 PM, said:
So... we should use the original, unmodified, bitmap for 161, right?
LoneCrusader, on 12 February 2012 - 01:09 PM, said:
No, it can be modified. I'm not opposed to making it look better.

Just pointing out that it is only useful on 95. Also, I had considered changing it earlier myself, but I haven't managed to create a banner that I think looks very good.
More Info:
In 98, if the Start Menu grows longer (taller) than the bitmap banner, then the "space" above it will be auto-filled with
the same blue color as in the original bitmap to prevent having it just "cut off."
EDIT: gerislamico is right below, 98 will autofill based on the color of the top of the bitmap.
In 95, this "auto fill" color is gray, not blue. So if the banner is changed from ending (at the top) with gray, then there will be a line wherever the banner ends and it will continue in gray to the top of the menu.
So,
the 98 banner must end at the top in the same blue color as the original, and the 95 banner must end at the top in the same gray color unless someone knows what to edit to change the autofill colors.
EDIT:
Struck out incorrect information. The problem seems to only affect Windows 95. There must be some sort of "version check" in EXPLORER that causes Bitmap 161 to be used on 95, and Bitmap 161 is not extended based on the bitmap color.

gerislamico, on 12 February 2012 - 05:01 PM, said:
Correctly 161 Bitmap it not modify for Win98/SE.
To look good in VGA Classic, edit it with the classic color palette 16 colors for 4 bits, Photoshop conducted the rest
The top of the bitmap should be the first pixel to the left the reference color. Windows will repeat along the "up" Menu.
I found that gerislamico is correct in that Windows 98 will "auto fill" above the end of the banner bitmap (157) with the same color as the end of the bitmap.
However, Windows 95 will not do so. Replacing Bitmap 161 will result in a "cutoff" at the end of the banner, and the rest of the menu sidebar will be gray. See below:

(Screenshot is of Windows 95-Shell Explorer, but the result is the same in both)
Does anyone know how to "correct" this behavior?
Either by finding a way to change the color of the "autofill" from gray; forcing the autofill to be based on the bitmap; or changing whatever "version check" causes 161 to be used on 95 instead of 157 (then 157 could be edited to a 95 banner)??