For the case (if this is what you mean, lol) I like the CM-690 case its got great airflow and looks even better. For interior what are you planning to go for? Intel or AMD. If you are going AMD, then for a HTPC you can get a Athlon 4850e and a 780G Motherboard. The onboard GPU solution will display FULL HD (I'm pretty sure?!?) it should come with a HD 3200. It even has HDMI for sound and video uncompressed.