Windows XP driver for nVidia Riva TNT card with TV out feature in HP Pavili

I have A HP pavilion 8505 PC which I bought in January 2000. This PC came with Win 98SE OS. Recently I upgraded OS to Win XP Sp2. The PC has a nVidia Riva TNT video card with TV out Feature which worked OK with Win 98SE. This feature is not available since I upgraded OS to Win XPSP2. Can any one help in getting this feature back.

Thanks in anticipation.