Really? A DVD player can be had for $29.99 including a remote control!
OK.. I'd suggest opening the PC and looking for its video slot - at 6 years old it may only have AGP which would not be very helpful. If it's PCI-e you could buy a $20 video card (HD4550, HD5450, HD6450) which would have HDMI, VGA and DVI and work nicely between the local monitor and the Vizio. As far as a remote, buy a MCE remote from the egg - they're routinely on sale for under $20