Like the title says, where are the backgrounds located at, on the HDD ? I am getting a usb to 2.5 adaptor soon, and going to be updating the xm icons, and putting some more backgrounds on it (i already have some THANKS GARRETT ! ! ! ! ! !)
See my post here:
BTW, I would recommned backing a backup before you alter files on the drive. I would hate for you to get the "Cannot use HDD" error 
is there a certain way to back it up, or can i just create a folder on my computer, and drag and drop everything from the HDD of the Z to the folder ? (I have a 1TB external that I will then transfer it to)
Use Acronis True Image Home (free download), I know it works perfectly. Do a complete drive backup (all 4 partitions). It may be slow using the USB adapter. This is also nice to do if you have loaded a bunch of cd's onto the hdd. I always keep a backup of my drive.