How do you grasp two computer monitors set up for one computer?

Answer:

you want a video card with dual head. then it's smooth software set up
What operating system are you using? Also, what graphics card(s) do you have?
attain a graphics card with two head, nvidea works better for that then ATI or obtain a matrox dualhead2go
A lot of new graphics cards at the moment have two output ports on the rear legs so you can just plug the second monitor surrounded by and enable extended desktop within windows or anything OS you're using. Other than that i can only conjecture of one of those little gadgets that you plug into one port and it allows multiple output.
You call for a graphic card near 2 heads so that the signal will jump to both monitors.