NK has released a Nes emulator for the GP2X and also has updated his Snes emulator.
Cant tell you whats new at this time (translator is rubbish) but you can download from our
NesGP2X --> http://gp2x-emulation.dcemu.co.uk/nesgp2x.shtml
Snes GP2X Pages --> http://gp2x-emulation.dcemu.co.uk/snesemulator.shtml