ADVANCED
You can run NeoDSConvert from the command line. In this case, it takes up to 2 parameters.
-bios0 use the Europe MVS (Ver. 2)
-bios1 use the Europe MVS (Ver. 1)
-bios2 use the US MVS (Ver. 2?)
-bios3 use the US MVS (Ver. 1)
-bios4 use the Asia MVS (Ver. 3)
-bios5 use the Japan MVS (Ver. 3)
-bios6 use the Japan MVS (Ver. 2)
-bios7 use the Japan MVS (Ver. 1)
-bios8 use the Universe Bios
-bios9 use the Debug MVS
-bios10 use the Asia AES
-bios11 use the Japan AES
If there is another parameter, it will be interpreted as the name of the game, as given to MAME. In this case, only this rom will be converted.
For example, pretend you want to convert Metal Slug 1, using the japan-s2 bios. Create a new directory (C:\roms). Copy mslug.zip and NeoDsConvert.exe into C:\roms. To open a command line, click start, select "run...", type "cmd", and press enter. Type "cd c:\roms". Press enter. Then type "NeoDSConvert -bios6 mslug". Press enter.
If you want to use the universal bios, name the file uni-bios.rom, and add it to neogeo.zip. This enables lots of nice features like switching between home and arcade mode, and cheats. This is the recommended way to use NeoDS.