I picked up a 600 watt inverter at a rummage sale last week for $25.00. (port-a-wattz 600 modified sign wave) This idea hit me square in the head. If I build a genney like the ones on this site and attach it to the exersize bike then to a deep cycle marine battery then to the inverter and hook the ps2 and the 21" tv my kid has to pedal to charge the battery and then can play the ever so important video games. Hmmm might have to look in further on this one.