Originally Posted by redman223
So I WILL need the optical cable, but only for surround sound in movies, and I will have to use the special rca cables for surround sound in games. That is the receiver he has, and his tv is a 70" kds-xbr2 and on sony's website it says it has a pc input. What does that mean exactly, is it a dvi input or is it a vga input....wouldn't the vga input look like crap when compared to dvi at 1920x1080?
As for movies you need an optical cable only if you want to use your receiver to decode the digital sound. You could use DVD player software instead to decode the sound and output it through your sound card's analog outputs. I prefer to use my receiver to do that in my system. I also use the receiver to expand stereo music to surround sound. My PC with motherboard sound can't do that. Your creative sound card my be good enough so that you don't need to use your receiver's sound logic. However optical sound cables are inexpensive (Walmart) so I advise you try both options.
I pulled up the manual to the KDSR70XBR2 from the Sony web site. It says "Do not connect a PC to the TV's HDMI input. Use the PC IN (RGB IN) input instead when connecting a PC." The HDTV has a native 1080 resolution and it will accept that resolution (1920 x 1080) from a PC via the RGB port. It will also handle many other standard PC resolutions (640x480, 800x600, 1024x768, etc.). BTW an RGB input is a VGA input.
Theoretically you could attach a PC to a HDMI port with a DVI to HDMI adapter. However, HDMI port will only handle video resolutions (480, 720 and 1080). You'd be out of luck with games that don't support these. Also you would have problems with overscan which will crop off some the displayed image from your computer. Google "overscan" for details. Ideally a HDTV should have a DVI computer input in addition to RGB one. Other brands do by Sony doesn't.
As far as the appearrance of an analog input, I think it'll would look fine (not crap). It looks good on my Sony HDTV (1366x768 natve resolution).