Gameboy Advance / Nintendo DS / DSi Emulator.
unzip the no$gba package into a new/blank folder (or into your existing no$gba folder when installing an update) and start the no$gba.exe file.
For more info about additional files see built-in help. The program should work (slowly) on any 80386SX (and up).
no$gba will eventually create some files and subdirectories in the no$gba folder, aside from that it does not create or modify other files/registry settings (except nocashio, see below). If no longer needed, just delete the no$gba folder with all files/folders in it.
a parallel port driver for windows NT/2K/XP, no$gba prompts you if you want to install the driver (only when -if- accessing the parallel port under NT/2K/XP). When -if- it is installed, you can uninstall it in no$gba utility menu.