Using Media Edition with a digital cable box

[hammermtl]

Hey Guys

First of all sorry if this is in the wrong section

i'm looking at buying a media center pc. I currently have digital cable with digital receiver box. how can i use media center to control the digital box or can i somehow get media center tv tuners to decode the chanels past 125 ?

additionally would dual tuners work under this scenario?

Thanks,

Josh