Ok, after finding out today I need new spark plugs and was recommended to get the 30,000 mile service performed, which includes a replacement of the PCV valve, I have some questions. Has anyone here replaced their PCV valve themself? How much did it cost? How hard was it? Do you remember how you did it? I tried search and there wasn't anything on this, so any help anybody could give me would be greatly appreciated.
Like a dummy, I forgot some pertinent information.

I have a 2003 Sport with the 3.7L. Sorry about that everybody.
James