TV cards

[Kelsay, Brian - Kansas City, MO]

In relation to MythTV or Freevo, say I get a Hauppage PVR-150,
http://www.spoofee.com/forums/showthread.php?t=30751 , now $59 after
rebate...the "125-channel cable-ready tuner" doesn't allow you to get
the upper channels that you get thru digital cable.  Mine goes to some
large number though I don't have them all, but specifically HBO resides
in the 300-312 range.  

Will one of these allow you to get the digital cable channels without
being connected to a cable box and how do you get the upper channels?