SHIFT-Key Wrote:2.)  Download 'JPEG-Encoder' and '0112-creator':
      a) recode your JPEGs with 'JPEG-Encoder' to reduce size and delete metadata
          (the filesize of the resulting JPEG must be less or equal to the value you have edited in your vshmain.prx)

No, no... I meant, in your first post (quoted above) you say the "filesize of the resulting JPEG must be less or equal to the value you have edited in your vshmain.prx".  

So, I figure the instructions you gave for hex editing would be specific to the size of the 01-12.bmp created by this JPEG Encoder.

To get to the point of what I'm trying to ask:

If I use this vshmain.prx hack, can I use PSP Filer to move/rename saved wallpaper from Flash1 to Flash0 (01-12.bmp), and show my full res bg, with out corrupting my icons?

I'll just try it and see... (I'll report back with my findings :))