<a href="http://hem.passagen.se/flubba/gba.html">FluBBa</a> has updated his release of Green Beret Single Game Arcade Emulator for the GBA (Also works on Nintendo DS and Gamecube Gameboy Player)heres the info:
V0.02 - 2005-07-11 (FluBBa)
Added sound.
Added MultiBoot transfer.
Added Pogoshell support.
Fixed the CPU bugs.
Download from here --> <a href="http://gbaemu.dcemu.co.uk/greenboy.shtml">http://gbaemu.dcemu.co.uk/greenboy.shtml</a>.