> Is there any way to tell Windows to just throw out whatever junk it has
> in the silly cache and rebuild it?

I too wrestled with this until I gave up. If you change an icon for an
app it is anyone's guess on which machines it will change. I got an
automated clear all cached icons going [you have to do it several places
I seem to recall] but there was no consistency. Sometimes it worked and
sometimes it failed. I never bothered to find out why - just put it
down to yet another Windows nuance.

Andre Labuschagne