9800GTX+ HDMI video quality

[HotCrossBuns156]

I've recently clenched a 32" samsung 720P HDTV(3 series w/ integrated speakers) from my local Fry's and I happened to grab a 9800gtx+ with an HDMI adapter as well. The television's native resolution is 1366 x 768 however, after installing all of the latest drivers setting the native resolution has become literally impossible. the hdmi cable is a male to male and the video card has an hdmi adapter to go on top of either of its two DVI slots. I can only set the screen resolution to 800 x 600, 1024 x 768, 1280 x 720, 1600 x 900, and 1920 x 1080 (each of them gives me a blurry and extremely unstatisfying picture). I find this very intriguing because if i just set up the standard dvi cable, i can set up the native resolution easily. PLEASE help me get to the bottom of this, anybody.