1996 Honda Civic Engine Oil Leaks and or Seeps

I have an oil leak that just started. (I just replaced the radiator) but I'm not sure where to start it looks like the main buildup is right below the distributor cap but the distributor cap appears to be dry... except underneath the cap where the distributor bolts on to the engine there is this hose and a screw that is just covered in oil... the valve cover is not wet but the valve cover bolt that is by the spark plugs is...

Should I start with just replacing the valve cover gasket and grommets?? Oh and what about the pvc valve? what' does that do??

thanks!!![img:910bc5502a]http://www.2carpros.com/forum/automotive_pictures/252013_honda1996__1.jpg[/img:910bc5502a]
[img:910bc5502a]http://www.2carpros.com/forum/automotive_pictures/252013_honda1996__1.jpg[/img:910bc5502a]