Ive read all the little information describing these tuners but Ive never seen one actually used, so Im alittle confused how it all works. I have an hddvr, but Ive run out of space, so I wanted to get a tuner put into my new computer that I plan on buying from dell. Does it work the same as the hddvr? Should I get rid of the hddvr if I own this tuner? Will I be able to record hd movies with this tuner? Whats the difference between this and the "ATI Theater 650 PRO Combo Analog/Digital TV Tuner"?

Sorry for all the questions but Ive been researching for days and I still feel lost.

It has a slot for a CableCard.

The big question is, can your cable company supply you with a CableCard, and is it well supported?