What is the File Name for the ATT Blue Globe

Does anyone know the filename of the ATT Blue globe that appears in the background when you activate the navigation slider at the bottom of the screen?

I was able to change the background on the old Tilt 8925 by saving a different picture over the landscape_bknd.bmp in the Windows directory folder, for example.

I know we 'cant' change the background from choosing a different picture like we can on the "Today" screen, but i would like to know the name of the globe picture , its directory location (windows?) and i want to attempt saving a different pic using the same file name and see if this will work on the Tilt2.

I have TF3D enabled but stilcannot change the globe on secondary screens.  Only the today screen changes.

the only att_tabbed file i see is a .tsk file that looks like a program type file.

The .tsk files are themes, not individual wallpapers. They change more than just the background. On my Tilt 2 the file I posted earlier gives me the AT$T globe on my secondary screens (I'm using SPB Mobile Shell instead of TF3D).