Unfortunately that is simply the icon for the object, not the graphic shown
in the GE. (ico file rather than a jpg)
In the registry: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\GameUX has a
"BoxArt" entry for each installed game, however on self-registered games
(i.e. dragged and dropped onto the GE) the entry doesn't seem to work even
if manually added. The only real difference is the "ConfigInstallType"
entry, (3 for recognized games, 4 for self-registered games, so I suspect it
has something to do with that (and changing it manually doesn't work
either).
With luck someone will create a game-register program that will allow us to
add in the ones not automatically recognized.
Mark