I want to put a CD-RW drive in my EVO. I know the inside of the case is semi-proprietary and thinking maybe that the BIOS will be picky on what I put in. So what should I do? Forget about Compaq/HP cust. service. What a joke. I also don't know what model number my box is either because it doesn't say anywhere on the case (inside and out). It's a P4 1.5ghz, 392mb RAM, 20gb HD, NVIDIA Vanta video. It's a black "tower" case with a silver face towards the bottom. Thanks for any help