You need to look up the model tuner card you have.
I have two in my HTPC, one is analog and the other is digital.
In my area basic cable is unscrabled anaolg, no need for a box. If your tv pulls in the channels off the cable w/o a box then your tuner card should also unless its digital, not installed correctly(drivers), or broken.
Snapstreams Beyond TV works well as does GBTV, and Knoppmyth
which is also free.
I've yet to try Microsofts Media Center edition of XP.
If you find something different that works great let us now about it.
98 SSEi 111,222 miles.
Intense PCM, LS6 Valve springs, PEMS, FWI. Hawk Street Pads.