Wow every now and then it seems this thread just gets bumped back up
For the computer, you can get stepmania.. it's just DDR on your computer, and you can download the song/step files from IRC. Once you do that, you can get a PS -> USB Convertor that's supported by Stepmania, and actually play DDR w/ a pad on your computer with every song from every mix, for free It's a pretty sweet deal
Also just wondering.. is anyone into other Bemani (music) games?? I'm a fan of Beatmania, AKA IIDX. It's a game where you have a turn table and 7 keys, and you press the keys/turn the turntable when little bars come down from the top of the screen. Like DDR, it's also very addicting, but hasn't been released in America yet.