We love Windows Media Center but without access to our favorite HD content it just isn't that interesting. So obviously we got excited when we first learned that Ceton planned to release a PCI-E card that would allow us to record four HD shows at once with a single CableCARD, but the question has been, how much? Now we knew it'd be cheaper than the $1200 that ATI would charge us for four digital cable tuners but according to Dave Zatz the yet to be announced price is $399. In addition, he has learned that Steve Balmer will demo the ca