Kworld tv tuner, Cable input, not antenna

hello to all reading this.  Here's the background.   I have a Kworld plus tv tuner model number UB435-Q,  I have free cable in my room, and it works just fine to my little tv. I'd also like it set up on my computer, but when i go to windows media center, it only allows me to set up an antenna connection, despite the fact that i have a cable connection going right into a tv tuner plugged into a usb port.

how do i get it to work?     (the tv tuner came with arcsoft total media,  and for an unknown reason to me all channels were locked, but it picked them up still, and i could here bits and pieces of sound)

thank you