recording shows from cable TV?

The analog outputs from your cable box into your DVD recorder ,should work.That's what I do.Of course it's standard definition.Before that,I used a VCR.Try to buy one with a 30 day return,just to be on the safe side, but I never ran into a copy guard.

IN my area,the cable company charges a premium for the Tennis Channel.A friend who plays tennis in a different area,different cable company,also pays extra for the Tennis Channel.With that said,if Goldenears has to pay a premium to receive it,he will need his cable box,or something that has a cable card,and only some TV sets have that option,that I can think of.You still may have to pay extra for it,even with the card, depending on your company,and area.A cable card takes place of the cable box,but has its limits.No video on demand,or anything else that needs the box to talk to the cable servers,to turn on features.I would be guessing if it is over channel 100(ballpark number),it needs the cable box to be viewed,or recorded. It usually falls out of the basic cable range most of the time.

The HDHomerun does have a cable card option.I didn't check the others.If it is premium,the OP may still have to get the tuner card(that plugs into this device)from TWC,and may have to pay extra for it,and ask TWC if it will work.

Links for cable card if needed in place of box if it is a premium service.[http://www.engadget.com/2010/01/07/hdhomerun-developing-a-dual-cablecard-network-tuner-for-249/][http://en.wikipedia.org/wiki/CableCARD]

That HDHomerun with the Cable Card option might not be on the market yet.I'm not up to date on computer based gear.But,I'm guessing a cable card option may be still needed,for the Tennis Channel,that involves any premium channel recording done without a cable box.