I thought flovor flav died from smoking too much crack?
Anyway, if you have a clicking, the other guy is probably right, check the cable. If you have a really unhealthy schreeching sound, check the cups. Basically, grab both cranks and try to wiggle them laterally (the way they're not supposed to wiggle. If they wiggle, you gotta tighten/adjust the thing that screws into the frame.