Sorry, but using such big EEPROM's wouldnt work anyway. The NES cant adress more than 64KB of ROM without a mapper, and even then, not more than 1-2MB. 512MB is therefore just a dream Yes, you could modify the NES very much, but then it probably wouldnt be much of a NES anymore Besides, could you send me the HDD-code? I NEVER thougt it would be possible with a HDD in the NES, so please let me see it! -Jaffe