720x480 is DVD standard resolution.
<< when i put it to 800x600 it does it but I'm missing buch of the pixels on the sides and stuff. >>
That's most likely the fault of your TV output device or its adjustment, not the TV. Although some cheap TV's overscan by a lot, so it might be the TV if only the sides are cut off.
If you are using the video-out from a graphics card, the resolution you have selected for the display and the effective resolution sent to the TV are 2 different things. The actual picture resolution being sent to the TV is probably the same regardless of what your desktop resolution is set to - one just has more stuff crammed into the same number of scan lines - which is probably about 300 if you are using composite outputs, or around 400 if you are using s-video.