Yes pc's output rgb.
but before you hook up that beast set your video mode to
640x480 at 60hz.
You should hook up the rgb and it looks like your cable is using seperate syncs.
So try them on the seperate syncs and if you don't get a signal swap the black and white connectors.
The specs on that monitor says up to 800x600 but I didn't see at what refresh rate.
Later,
dabone