Sorry Doggy, didn't realise that you meant terrestrial digital, I'll move this to that section. Technisat do a PCI card called the AirStar, superb little unit, you can get it from SatEuropa by following the link at the top of the forum.
check out the sites below, - of the hauppauge products i can only recommend the DEC2000-T which is a set top box and can playback your recordings on TV as well as being an external (USB1.1/2.0)PC card. (the DEC1000 is not recommended - USB1.0 only)
The Digiview card from Nebula does not function as a set top box but is well supported (great review on TV-Cards.com) and they are currently developing a module for TopUpTV cards to function.
Sky HD, TM6800HD, Manhattan Plaza ST550 and TM1500 CI+. 1.0m dish and 36v motor, Panasonic DVD HDD recorder and Panasonic video/DVD recorder. Sony G800 HD TV stand/surround system + Sony KDL40W2000. Infinity USB, Elvis, CAS1, CAS2.