i am running a system with a 5400rpm 40gb seagate hdd on the primary ide and an lg dvd/cd-rw combo on the secondry ide channel. i am gonna buy another hdd( most probably a seagate 80gb 7200rpm). what should be the ideal setup for the three devices? consider the following options: 1) both the hdds on the primary and the dvd on secondry? 2) the new hdd on primary and the dvd and old hdd on secondry?( is it possible??) i need to get the new hdd run at max performance.