Thank you. I did what your referenced link prescribes in the first "I got it to work and this is how I did it!" assertion, but Windows 98SE behaves much as it did when I simply altered the VCACHE settings and booted normally.
It produces quite a few problems.
1. 98SE immediately (on booting) gives me an error notification and suggests that I change my selected graphics adapter. All of the screen icons are solid white silhouettes. I have no idea if they could be accessed, because of another problem (see point two below due to no mouse driver).
2. I just installed a Microsoft wheel mouse that I purchased at a local computer store, because my old mouse developed what appeared to be an intermittent short in the wire to the computer, and my USB card would detect it and shut down. The computer store rep said that this Microsoft wheel mouse (USB mouse) didn't need a driver. It works fine with XP, but Windows 98SE detects it when I plug it in again after booting (at least I think I've booted) to 98SE, and asks for a driver. It tells me to point to the driver. I have no driver, so I'm out of luck. I can't even pretend to use the mouse in the Windows 98SE screen.
So, I've got an unhappy video problem, and a "no mouse" problem. Any way out?
(You'd like to think there'd be a mouse driver for 98SE for this Microsoft wheel mouse, but Microsoft stopped support 98SE long ago. You'd like to think there'd be a memory setting tweak that would get my graphics adapter on the motherboard to work under 98SE, but I'm dealing with a memory limiting situation. Honestly, I'm not even sure that loading HimemX.exe via config.sys really did any good.)