Setting background for gdm

[Patrick Colbeck <Pat Colbeck esc azlan co uk>]

Hi

Does anyone know a good program for setting the background behind gdms 
chooser. The default init file uses xsetroot but that only supports
bitmaps. I tried ee -r but it doesnt seem to work properly ie it
doesnt exit and doesnt tile the pixture either. 
I would like to use some of Propagandas nice wallpaper tiles to jazz
things up a bit.

Ta

Pat