Civic96 knocking sound in AC compressor
 

Hi, just new in this site. I have a 1996 civic/LX with regular motor and I heard that there was a knocking sound when the ac compressor pulley was running. May be the bearing is the problem? Do I need to replaced the compressor? What other parts that I need to replace when replacing the compressor? If you have a step by step instruction that help me a lot due I'm not planning to send it to shop and pay big money, also if you have pics for replacing it, really appreciated, please help. Thank you in advance!