hi, i want to know which dvd rom drive i should buy. i already have a L.G cd writer (52x). so i dont want to buy a combo drive. my vendor has a sony dvd drive 16x but i thought i would do some research before buying. i have heard that some dvd drives dont play certain format dvd's . i want to know what is the meaning of dvd+r/rw and dvd-r/rw also what is dvd audio and can these drives play dvd audio. i was told that dvd drive would cost around 1600. my p.c config is intel 2.8 h.t ,915gav(intel orignal),512 mb ddr(400mhz),80g.b sata 7200 segate h.d.d,L.G 52x writer. do i need a graphic card?? so please tell me which dvd drive plays dvd+r/rw and dvd-r/rw . i forgot to ask what double layered dvd's are and which drive plays it. please mention some specification of the drive u recomend. does anybody have a sony 16x , should i buy sony(afterall "it's a SONY)??