16:9 aspect-help!!!



New Member
I'm currently doing a presentation that is going to be displayed on a 42" high definition plasma screen.
I've built my presentation to the correct 16:9 ratio of high def.
The problem I'm having is that the display settings in my pc are all 4:3 aspect ratios and therefore, my presentation is not filling the screen. I know on the screen you can stretch it to fill, but it's distorting the image.
Does anyone know what the problem is? Someone told me the problem is with the video card, that it needs to be able to display that aspect ratio which is 852 pixels by 480 pixels. (16:9)
Is there such video cards out there, or maybe you know of a different fix? HELP!!!