The 2250 is ATSC/ClearQAM/NTSC Dual-Tuner. Which makes it good for Digital OTA/Analog Cable/Aanalog OTA without issue. Its a pretty popular choice among HTPC builders.
Here you can see the specs listed:
http://www.newegg.com/Product/Produc...82E16815116037
It converts the OTA signal to MPEG. Then you can use Windows Movie Maker and convert easily to WMV.
Here is a great resource for HTPC's and how to build them.
http://www.avsforum.com/avs-vb/forumdisplay.php?f=26
The part I find more compelling over other services such as TiVo is that I then get full control of the recorded program. This will allow me to stream it to any TV/Computer in the house, and if my wife and I travel for business or whatever, we can move them to a laptop and be good. It does cost more from the outset, but there is not monthly fee.
And, if someone is wanting to avoid Windows, there is tons of software out there from MythTV to XBMC.