I would like to build an HTPC, but know very little about it. I have very basic questions about the audio/video card(s): I would like to be able to use my hi-def TV as the computer monitor. And when I play a DVD, I would like the HTPC to output video to my hi-def TV via component or DVI, and output DD5.1 and DTS to my A/V reciever's OPTICAL audio input. Is this possible, and does anyone have any recommendations as to what audio/video card I should use? I would like to keep it inexpensive if possible. Thanks for any help.