i would like to build my own htpc. need some advice on the parts. i will be only using it for surfing(multi tasking) blue ray movies and i would like to use my old tivo box as the case. i have a wd 2tb drive i was gonna use to upgrade my tivo and thought why not use it here? also would like to incorperate my lifestyles 25 as my sound....any help would be apppreciated....please be specific i am new ....thanks