Changing the thin client login theme on Hardy

[Mickey Moore]

My ultimate goal is to change the thin client login background and logo to one specific to our school. I find I am unable even to switch from the default ubuntu theme to the edubuntu theme. I have read an FAQ about this that suggested that I needed only change the chroot(/opt/ltsp/i386) symlink in /usr/share/ldm/themes/default (which links to /etc/alternatives/ldm-theme which links to /usr/share/ldm/themes/ubuntu). This has no effect on Hardy. Does anyone know the process for changing the ldm login screen theme on Hardy?