I used to play a long time ago too =)
If I had the time, I would go back to them. I used to play strictly heavy mode back in the day. Now days whenever I jump on for fun, I can only endure standard and a few heavy mode songs. The steps are still there memorized in my muscles, but my muscles can't keep up anymore. I've become jelly due to college o<o
I also used to play Stepmania. Some songs are really well made. I just don't like the songs with steps that require you to have both your legs and both your hands touching the pad.
@Vickicat: I bought my dance pad off of red octane years ago. This one in fact:
link
It came with an Xbox, PS2 and USB adapter. It really shouldn't have been hard to find a pad with a USB end, but glad you found one. Maybe it's hard to find now days. I tried checking Red Octane's site, but it says they're under maintenance. I hope that's just temporary. I bought the pad straight off from their site.