Rattle in door

I have an annoying rattle in my passenger front door inside the latch mechanism that has been there for years. I just thought it would rattle itself into submission after a while, but no.

So, I want to know how to get the guts out of the door. I need the whole section where the latch is...as that is where the rattle comes from. I noticed that there are three screws/bolts that are in that star shaped head.

Will this be too much of a PITA to do, or is this something that is doable in a few hours? I am worried that the window parts will also have to be removed to get the rest out. Any tips will help! I am also going to look in my Clymer book.