However, it probably has an adapter to output component video - three RCA-type cables, one blue, one green, and one red. Your HDTV probably has component inputs. You'll need a component video cable to attach the two, though.
This will let you run in 720p mode. Should look great.
its what i use for my 1080p as a single cable. dvi on one end hdmi on the other. since hdmi and dvi specs are hardware compatible minus the fact you can't send sound down the cable cause thats not part of the dvi spec. what u found will work just fine.