I've got it to work having pc linked to the tv but i cant get it setup right and im using a dvi-hdmi lead
I have a Nvidia 6800 Gt card with a Dvi and the standard vga port ive linked the card via a cheap dvi-hdmi lead from ebay

to my Panasonic TX26LXD52 yet whatever resloution i choose the picture quality is never sharp and if watching videos you can see the blockness as if the resolution is low.
Im using powerstrip and it detects as 640x480

so i use the detect option in powerstrip that detects all the right settings and resolution that my tv actually is which ive saved as a driver then updating the windows driver for my tv yet still i never get a proper picture and powerstrip lists as 640x480 if move the cursor over the powerstrip icon