Hey folks, new to the whole e34 world (and BMW ownership) and I'm wondering some things about lights...

- What are smilies? And I don't mean those hehe
- What kind of lights are on my canadian 95 525i? Plain halogen right?
- What are euro lights?
- From a performance point of view, is there an advantage to change the headlights on my car?
- Were lights introduced on E39 models or is there a perfect-fit kit for E34 as well?
- Is an lights conversion hard to do?

phew, that's about it for now I think... thanks to all who take the time to answer!