From a South African reader:

For Windows 98/98SE

Use DEBUG to display the file Flying Windows.scr (or preferably a backup)

Display 1F50 to 1FC0 (a reasonable range)

-D 1F50 1FCF

xxxx:1F50  57 61 72 70 53 70 65 65-64 00 00 00 44 65 6E 73   WarpSpeed...Dens
xxxx:1F60  69 74 79 00 00 00 00 00-32 00 00 00 FF 00 00 00   ity.....2.......
xxxx:1F70  53 63 72 65 65 6E 53 61-76 65 55 73 65 50 61 73   ScreenSaveUsePas
xxxx:1F80  73 77 6F 72 64 00 00 00-50 41 53 53 57 4F 52 44   sword...PASSWORD
xxxx:1F90  2E 43 50 4C 00 00 00 00-56 65 72 69 66 79 53 63   .CPL....VerifySc
xxxx:1FA0  72 65 65 6E 53 61 76 65-50 77 64 00 49 4D 4D 33   reenSavePwd.IMM3
xxxx:1FB0  32 2E 44 4C 4C 00 00 00-49 6D 6D 41 73 73 6F 63   2.DLL...ImmAssoc
xxxx:1FC0  69 61 74 65 43 6F 6E 74-65 78 74 00 00 00 00 00   iateContext.....


-E 1F6C HH where HH is the char in hex you want.


You can also change the font as long as it's 9 chars or fewer - if fewer,
just pad out to the right using zeroes. I now have a rather silly
screensaver called MyFlyingDoves.scr, using char FF in Webdings.ttf.