hi def problem

[okey]

I have got a 32" philips lcd hd ready
and also a winfast gforce agp 6200td graphics card

when i run it through my lcd picture is fine using 1024 x 768m but when i select hd(720p or 1080i) the picture looks good but it does not fit the screen properly, i know the lcd works fine because i have got a samsung dvd upscaller and it works in 720p and 1080i

could it be the graphics card? or do i need a more up to date 1
i have also got the latest drivers for the card.
I have been on the leadtek website and there is a bios update to fix hd problems, but how do i flash the graphics card,(which software)

http://www.leadtek.com.tw/eng/support/download.asp?downlineid=118&downline=GeForce+A6200+TD

please help as i have some hi-def divx trailors which i want to see the quallity of it on my lcd
thanx

 

[okey]

yes i am using a dvi to hdmi convertor, it works fine with 1280x720 but i my card is hd ready, so when i set it to 720p or higher that is where the problem is.