D4 Std: IDE toolbar buttons missing glyphs

Win 98 SE, have D4 Std, Update pack 3, BCB 3 Pro, Delphi 2 (Desktop)

D4:The glyphs/images normally shown on the IDE toolbar's buttons have
disappeared. I've uninstalled/reinstalled D4, reinstalled update, but
they haven't returned. The buttons are not simply grayed, they have
"holes" where the glyphs used to be. Sometimes it is the blue of the
title bar, sometimes the green of the standard green Windows desktop.
The buttons otherwise function and the tooltips also work.

Borland's support site did not have any info about this. Does anybody
have an idea how to repair this?