some of your info is lacking
It is suggested the best connection is hdmi/dvi to hdmi/dvi, only based on the theory that less analog to digital conversion steps results in a better picture
Not sure what you have on your tv
Not sure what your break out looks like
Your HDTV is just a TV/Monitor, meaning it displays what you feed into it.
If you have movies on your pc in dvd, cd, harddrive form, you can display it on your hdtv.
HD content will be seen as HD content.
SD content will be displayed as SD content.
HDdvd or Bluray content will be seen as 720p or 1080 i/p, both is HD, one being HD and the latter being full HD...via HDMI/DVI.
If you download 720p or 1080i/p content, say trailers or wmv videos from micrsoft.com (example) you can view them as HD regardless of the limitation of HDMI/DVI.
I say the above because that is how content copy protection for HDdvd and Bluray works. It limits full HD only via HDMI/DVI.
High-Definition Multimedia Interface - Wikipedia, the free encyclopedia
and your link seems to be dead