Capturing HD Video

I picked up a Black Magic Intensity Pro HD video capture card. Every wanted to capture a HD video source to your PC, well here is just about the only economical way currently to do so as far as I know. We need to make a Go! Go! Break Steady game preview video and need a way to capture the Xbox 360 HD output. The card can take input from both HDMI or HD component. Now I have to get a PC powerful enough to use the card. Need to spend more money - booo! - Did I tell you, "Developing a self funded game is only for masochist, financially that is". I would love to hear how other devs have captured HD from consoles.