Everyone is right here. VRGNCD5, you can change your distributor cap and rotor no sweat. i do it every other oil change. the only bad part is that the screw that holds the rotor to the distributor sometimes gets so hot that it literally welds itself to the distributor and you have to get it drilled out (hence the changing every other oil change). the cap only goes on one way, so you don't have to worry about that. and the rotor only goes on one way too, so you don't have to worry about that. changing your pcv is a good idea too. i hear after about 40K, they're dead anyways. and the O2 sensors are only good for about 60K-80K before you need a new one. but whatever you do, use the seafoam stuff FIRST so you don't gunk up all your new parts. as for the wires, i just bought some magnecors, and you'll love them. i got the 10mm, but it's the same except for some more EFI coating. you'll like them, and you shouldn't have to replace them for quite a long time! other than that, i think teamlegacy outlined it pretty good for you. let us know how much everything helps.

(for that misfire, check your cap and rotor when you pull them off, and make sure you put your wires back on in the right order in that funky honda criss cross pattern.)