Im a noob and need some help bad!!!

I just bought a Sony Bravia EX500 40" and I'm having some trouble finding good picture settings. I'm trying to run a Xbox 360 through HDMI and I'm having a really hard time getting a good picture. I was wondering if anyone had any settings that they use and could share. I'm hoping that its not the T.V. because so far I am not impressed with the picture quality, but then again im an HD virgin and honestly have no clue what the heck im doing. Any help would be greatly appreciated!!!!!

Thanks,
Dave

Thanks, I'll check some threads.

The picture seems kind of grainy/blurry/blocky. The standard game setting is terrible, the blur is awful. I tried a bunch of stuff myself with little luck. I have the 360 setup running 1080p.

oh and the tv is set to "full pixel" because thats the only setting that showed the entire screen.

I havent even setup anything other than the 360. Im going to creep around those threads and see what i can find. Thanks everyone for your help, you all replied so fast haha. I'll let you guys know how i make out.

Thanks again!!!!!
Dave

Found some settings on the threads. Looks MUCH better. Thanks A LOT guys, you really helped me out.