PCV valve is under a plastic cap on top of your upper plastic intake. Should be on the corner closest to the passenger side strut tower.

Fuel filter?

You'll stink. Just deal with it!

Yea like will said, you'll stink, but i always keep a rag in my other hand when im doing jobs like that. Always plan to get a little dirty...

Easiest way that I have found on fuel injected cars is to pull the fuel pump relay and run the car until it dies... If it will run at all. This will release all of the pressure in the lines and atleast make it so you don't spray fuel all over the place. You will still get some fuel out of the lines though.

thanks all any other pointers or anything to know before i do my tune up?

make sure you don't skip anything when doing your tune up this mean make sure you change the O2 sensor too.

thanks i dont know where my o2 sensor is but ill look at chiltons if needed. OH and about chiltons. I looked at the 95-99 edition for GM and there wasnt alot about bonnies, any pointers?