I already have a 1 TB drive, Dvd/Rom drive, Vista Ultimate 64bit. Later on, I will probably add a tv tuner card, and possibly a sound card. As for the Case, and PSU, im not really sure yet. I want something that is going to be out of the way, and not an eye sore. Some cases have a PSU, but im sure i can pick up a micro ATX one pretty easy.
I will probably pick up a small second HD, just for the OS. I work for a web hosting company, so HD's dissapear all the time