display order doesn't always work, you can mess with
send to back
send in front ...
but, to be sure
1. place "image" as the first oject in you drawing
(if you can)
2. copy all except "image", then erase previous, this will
always have "image" "under" all Acad objects.
hope this helps
Intel P4 3.0 GHZ
512 DDRAM
Win 2000 Pro
Autocad 14, 2002 with EP 2.3.1