you're in luck
the best torrent site on the net for retro games just opened signups for the first time in ages...
AND they're having full freeleech until next friday
Underground Gamer
any pc/mac/console game you could dream of prior to 2002 is there.
freeleech started a few hours ago and i already grabbed ALL atari 2600/5200/7200, nintendo, super nintendo, nintendo 64, gameboy, gameboy color, sega master, sega genesis, and sega gamegear roms complete with cover scans, manuals, screenshots, and video previews