A/C Compressor help

[sperz1]

I've tried to search on the forums without much luck.

I'm fairly certain the compressor on my 85 has gone bad. All was working fine, then it started clicking very loudly, and my a/c died shortly there after.

I want to change out the compressor myself but my repair manual doesn't list the procedure. I'm going to have a shop evacuate and charge my system. Is there anything I need to know before I jump into this? I've heard I need to oil the compressor before install, can anyone lead me in the right direction? I've also heard I should change the dryer. I'm not even sure what that is!

Sorry for the newbie type post. I'm pretty familiar with auto maintenance, but the a/c system is something that is totally new to to me.