How to monitor PC in different networks?

How do I rig up a PS3 and a PC one a single-input PC Monitor?

• So say I have a PS3 and PC, but my monitor, a PC Monitor, only has the one input. Given that there exists methods of watching Cable TV through the normal settop box, through a PC to a monitor, the thought comes, can it be done with a PS3. But then there aren't any HDMI-in on video cards, or rather, on those when you look in the < 400 dollar/pound bracket. (Pound as I'm in UK) So say you want to have the ability to record games, (As is capable on Xbox 360 hook to a pc video capture card) in addition to the single-input-monitor issue... The question then also becomes: How do I rig up a PS3 through a PC to a single-input PC Monitor, and after spending all that money on a PS3 and games, I don't have any spare cash for awhile for a HDMI multi-in/single out thingymajig, the device that lets you have several pieces of equipment with HDMI out's hook to a tv/monitor that only has one or two. That said, If and when I get said money to get a PS3, I'm gonna be also going for a full-HD monitor with DVI and HDMI connectors that don't have a "one or the other, not both" stupidity standard as I've seen before. But this is to preempt being unable to get multi-input pc monitors. (and full-HD tv's are far more expensive than their PC monitor equivalents)

• Answer:

  You can buy a box with two inputs and a lead that connects to your monitor. It has a switch to choose which one you want connected.