1. If this is a desktop you can add another video card.
2. And for both desktop and laptop you could use the usual USB Video Card (it's not a cable.) There are some hundred of these out there but you buy the one that works with your new monitor.
3. No again, a cable will not do the trick. Neither will a display or cable "splitter."
I was wondering how I would go about using two monitors with one computer. The computer that I am asking about is a Windows 10 Professional with one VGA connection. It has no DisplayPort or HDMI connector. Do I need to purchase some kind of an adapter cable?
I would like the capability to run two applications simultaneously, from the same computer. Thank you very much for any help!