Ok, here we go, the rough translation of README.TXT:
NesSnesGP2X (NesGP2X & SnesGP2X)
Last Update : 2005.11.22
1. Control
- File explorer
  ←, X : Previous directory
  →, Return, D-pad : Excute, Enter directory
  Start : Exit
  L, R : Change skin
- Common
  D-pad + R : Exit (Return to explorer)
  Volume +/- : Volume control
- NesGP2X
  D-pad, Start, Select, A, B : Game control
  R + Start : Reset
  R + Volume +/- : Frame skip
- SnesGP2X
  D-pad, Start, Select, A, B, X, Y, L, R : Game control
  D-pad + Start : Reset
  D-pat + Select : Display FPS 
2. Miscellaneous
- Run included install_lib.gpu from utility menu IF you got black screen instead of games
- The 'roms' directory under the where *.gpe is located is prefered to seek rom files.
- You can expand your skin directories from skin0 to skin9
- Defaulllt skin is made for snes. NesGP2X also runs with that.
- If you want to use same skin for both, copy / rename it like filer.png to filer_nes.png and filer_snes.png.
- SnesGP2X supports zip compressed rom files, NesGP2X doesn’t yet, though.
3. To do
- Support zip-compressed files (NesGP2X)
- Implement asm core from OpenSnes9x (SnesGP2X)
- Supoprt full screen (stretch) (both)
- Save State (both)
4. Original sources
- NesGP2X from InfoNES, Little John PalmOS, Nofrendo
  InfoNES : 
http://www.geocities.co.jp/SiliconValley/5604/
  Little John PalmOS : 
http://yoyofr92.free.fr/
  Nofrendo : 
http://www.baisoku.org/
- SnesGP2X from snes9x, OpenSnes9x, Little John PalmOS
  snes9x : 
http://snes9x.com
  OpenSnes9x : 
http://yoyofr92.free.fr/
  Little John PalmOS : 
http://yoyofr92.free.fr/
5. Programmed by
  NK(nightknight)
  
http://mystictales.net
  webmaster@mystictales.net
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Somebody post how it works  :lol: