Hi, I´d like to swop the old 80GB harddisk of my800mhz g4-flatpanel imac ( OS 10.3.8) but I don´t know how big the new one may be. I´m thinking of a Hitachi 250GB one. Apple hotline would not give a secure answer --or could not..I don´t know. Maybe one of you has already done such a change and can give a hint. thanx!!!