Heres the post with the background on all images that was posted above. If the cab for the backgrounds dont work try installing the manila he recommends. I ended up just doing that. Took a little bit to change all my other files I had customized the older one with but at least I can use that cab.
Previously I used the hex editing method. If insterested in that I still have the info on my computer but I dont remember where I found it.
Heres the link for ManilaMods by mun_rus
http://forum.xda-developers.com/showthread.php?t=432951
EDIT:
Heres the hex editing method if the other one doesnt work. Pretty easy.