You need a video card with TV-out.
Also, don't expect to be able to use the touchscreen to control the PC.
im putting a carputer in with a touch screen as my main monitor.
i have a 7" motorised tft screen in the back but it only has female rca jacks.
(the yellow ones)
how can i wire it to the pc?
do i need a good grafics card or a tv card ? then just run a double male end rca cable