I've got this nifty little kit, TeVii S650 [DVB S-S2] USB card. My BBC HD captures are brilliant *- no glitches what-so-ever. They regularly update their drivers for both 32 & 64 bit OS's (Win & Linux).
If you're thinking of getting one then get that one the new S660 model.
* BBC HD has recently reduced it avg video bitrate from 15 mbps to 10 mbps. It used to be ~6.07 GB/hour, now varies between 4.25-4.55 GB /hour!
face: if you're planning to get a usb version, then please get a TeVii (S650 or S660).