4 lcd 1 pc, with tail

Hello,

I would like to know the following

i have been asked to connect 4 lcd, computer screens, in one of his stores to either a PC or a DVD player, so he can play a promotion video at all screens at the same time.

Now i have been told, that i could use a VGA splitter/booster and that way connect the screens.

Also i could convert the component out, the video one, that most vid cards come with these days, to vga and then connect it like that.

What would be the better solution and with one will cost more?

Thanks in advance for any reaction