Legend of Zelda Version Guide
Nintendo Entertainment System (NES) Version
The original NES version.
Game Boy Advance (GBA) Version
The Version that was released for the GBA. Based primarily on the version from the Gamecube Collector's Edition, it had a few minor fixes from the original. The Wii Virtual Console version was based off of this one.
Broadcast Satellite X (BS-X) Version
Being a remake that was broadcasted only in Japan for a very short time (The servers for the BS-X have long been out), this version is only playable via emulation.
See bszelda.zeldalegends.net to get the game.