Mark...fear not help is at hand lol.
You can either
a) rename your pic to the same as a background pic in hal (rename the hal pic to .bak)
b) Do same as above only in the haptek player/data/standard/backgrounds
c) /LoadBackGrnd [file= data/standard/backgrounds/Room08.jpg]]
use this as a command in the haptek console...or place this in your normal haps (ie C:/Program Files/Zabaware/Ultra Hal Assistant 5/Characters...find your default.psn and see what your normal1, normal2 & normal3 are...then place above command into those .hap files)
here is mine and where the comand is placed
#Haptek Version= 1.00 Name= Hap_Happy HapType= script FileType= text
##standard
settexture[tex= [data/standard/skins/PartyDress02.jpg]]
delperson[figure= hair5_9EXP]
load [file= data/standard/skins/hair6_2EXP.htr]]
settexture [tex= data/standard/skins/PartyDress02.jpg]]
load [file= data/standard/skins/eyelashes.htr]]
LoadBackGrnd [file= data/standard/backgrounds/Room08.jpg]]
SetLight[i0= 1 i1= 2 f0= -1 f1= 1 f2= -0.7 ]
I place all my backgrounds in the haptek backgrounds folder and use the command above to change while in haptek player and the command above to implement in Hal upon startup. [
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Hope thats clear enough for you, any probs let me know.