How can I use three computer monitors like Bill Gates?

Cameron wants to try multi-monitor computing, like the Microsoft co-founder is known to do, but ideally without creating a spaghetti junction of wires

Multi-monitor computing is an idea that has been challenging me for some time - that and a spaghetti junction of wires.

I have super-powerful Alienware laptop but there is only one HDMI port, and it doesn't like running HDMI and anything else simultaneously.

I am wondering if I should build a PC that will have video cards and ports to support three screens and have a separate, dedicated travel laptop. What do you think?