TV Tuner for laptops?

[s37d]

I'm thinking of getting a tv tuner for my laptop so I can watch tv on it while I browse the web on my desktop. I have Comcast digital cable. No HD channels, just digital cable. I was wondering if you guys knew of any quality, decently priced digital cable tuners that would make this possible. USB would be good but any laptop interface is fine. Thanks a bunch

 

[Nick]

be warned quality wont be perfect, i cant recomened anything as i personally dont own one