So I have an '04 Lemond Poprad that came with a Bontrager crankset that has "Isis drive" printed on the side of it. I'm considering another crankset that says it's "Isis drive," so I'm assuming it's compatable? I'm confused mainly because a friend of mine says Isis is usually for Campy components, and I'm running Shimano. Yet the ad for the crankset says "Campy or Shimano." Can someone clarify for me?