1) To remove the fan, you would need to remove the front HDD cage, which you can do by unscrewing the screws at the bottom of the case. Then you can unscrew the front fan.
2) To buy the power button replacement kit for that case you can fill out this contact form. We have someone waiting to here from you. He can give you pricing and options.
3) BZ-U08 is compatible with the PC-60FNWX