Need help with my capture card?

ok you connect your xbox to your usb capture card then connect your computer up to your tv via dvi-hdmi or hdmi cord depends on what type of ports your tv has and what type of out put your computer has now heres the issue with that set up your going to be 1.2secs behind on your game on your tv since the signal from your xbox has to go thru your computer before it reaches the tv it is possible to get a splitter and stream your xbox straight to your tv and comp at the same time so this lag will not be problem.