I've heard of Xenons, I've heard of Halogen. . . . but what is a Composite Halogen? I bought a 2002 Audi A4 1.8T Quattro, but I am exchanging it with another, and I asked if it had Xenons. They said, not, it has Composite Halogens, which look the same. I told them I think I have Xenons and they said they look the same, so I must be confused. I think not! Does anyone know? Does the 2002 Audi A4 even come with Xenons! HELP!

Kyle