Right. I'm kinda sorta figuring this out as I go along since I've never ridden fixed. Anyhow, thanks for the info. I'm going to keep looking and see what I can find out there. I'd rather just find a cheap wheel, since the rear one right now is a bit gnarly anyway. I'm not sure if it's a cassette freehub or freewheel - what's the difference?
I may just wait and save up to redo this thing properly. Who knows. Cheers