putting in a new xp1700 & k7s5a, can i just trade out my cardsand ps(after install i'll go in and set everything in the bios) i should'nt have to format the hdd should i? and also with this mobo i should'nt have to use a ata66 controller, it's in the mobo right?and the onboard controller is backwards compatible to a ata66 right? i'd rather not format. unless i have to. lmk, jer