i know that (dvi and hdmi) > vga, thats why i have this long arse dvi-hdmi plug. but my tv interfaces with videocards better with a dvi->vga or dvi->vga adaptor and a vga-vga cord... it says so in the manual. i can only format the picture on the tv screen when the signal from the video card is coming thru the vga port.
this is specific to my tv though