There is no HD tuner, but if you get a digital tuner you can watch tv in HD.
I bought the HP express card digital tv tuner for Vista. Works perfect.
What you get:
1x hybrid analog/digital tuner card
1x mini-antenna which has its on mini-coax connector
1x mini-coax to normal-coax cable
1x input cable for VCR or XBox, which has four connectors, Red/White/Yellow RCA, and svideo
1x red/white rca audio extender cable.
1x USB infrared transponder
1x IR cable which connects from the USB transponder to control set-top boxes
1x MCE compatible remote control (which works with transponder) with 2 AAA batteries
1x driver install CD (just contains a simple EXE installer which contains the driver)
Installation is very easy. Just install the EXE file and you are ready to use the tuner card. Just plug in and go. I don't think the description here on CompUSA is accurate. The driver is install is necessary on both XP and Vista (you can run the install on XP with no issues). The specs say it works only in Media Center for Windows Vista. I tested it in Media Center in Windows XP MCE2005 and it worked perfectly fine.
Anywhere you go on the web you will see that the description never mentions the terms HD, high definition, widescreen, 720p, 1080i, or 1080p. It only says "digital". And HP tech support will not give you a worthwhile answer, either. I am here to tell you that the unit supports all of the above, as far as I have tested. All my widescreen digital channels came in perfectly fine.
The card does NOT come with any proprietary software. It is a rebranded Hauppauge WinTV 885 capture card, but it does not come with any Hauppauge software and I don't see that model number on the Hauppauge website.