I am working on setting up a system pedestal home entertainment system to replace my low memory DVR make available by the cable company. I have comprised a superior system other than desire to make sure with the intention of the Windows 7 Premium OS determine to permit me to run the Cablecard and record, rewind, playback, etc. Fundamentally, will the Win 7 Premium OS do what I desire or do I necessitate getting the Win 7 Prof or Ultimate. In addition be able to Win 7 Media Center handle two Cablecards by means of dual turners every ie HVR 2250. Thanks for several guidance you be able to provide.