Originally Posted by: minexsii worked on zombie from the cranberries (to give me something i could hear..so to speak)

That's the kind of thing I mean about "chords" that just use one or two fingers... another example is the opening rhythm riff of "Owner of the Lonely Hearts" by YES, or "One Day" by 54-40. You'll find there are lots of little tricks out there, and that many recognizable riffs don't quite use "normal" chords. Take Dmaj/Dmin for example... they both have a very distinct sound, and really let you know "hey, I'm playing D MAJOR!" or "hey, I'm playing in D MINOR!" and yet there are many times where the chord will instead be played with just leaving the high E string open... this really doesn't resolve the chord to maj or min either way, so the "mood" remains undefined... figuring out exactly the chord and the mathematics behind it isn't important.. its just fun to experiment and if you like what you come up with, use it. Kurt Cobain kind of had that approach, a lot of simple riffs that were very catchy.