Hi , I currently have my Sony HTPC setup with 2 ATI Digital Cable tuners. I have verizon FIOS and two motorola MCards installed.

1- LIVETV  picture quality is suffering and I am wondering if the cause is my graphics card from Nvidia?  The card is upconverting everything to 1080P , I am not sure that is a good idea , given the fact it has to pass throught my AV receiver to get the TV.  I am also 100% sure picture quality will improve if the card just passes the native resolution of each Channel without the upconverstion.

 I am also planning to upgrade this to Windows 7 , I am sure that will bring a whole new set of issues.

If there are other Sony HTPC owners out there will these issues please let me know. 

 Thanks!!!