I haven't tried the newest theme manager yet...
but previously I just set a suite with TM and the suite reloaded on log on.
if i run a desktopx theme that has a wall, when I tell dtx to run at start, it does.
WB run automatically unless you set a windows default theme.
but then, are you talking about separate wall applied by ThemeManager or a WB skin that has a wall or a desktopx theme with a wall?