I just have a few questions. Does my imac g3 350 mhz have an internal fan? If not what keeps it from burning up? Also, what would be a good hard drive and dvd drive for it? It's a slot loading drive so I'd need a slot loading superdrive. I'm also wanting to upgrade to 1 GB of RAM. Will any of this stuff cause it to overheat? Oh, and one more thing... if i get a new hard drive, are you allowed to reinstall mac osx on it.