Can i obtain dual monitors with 2 different video cards?

my video card only has 1 output but i have another computer with a video card i am not using, can i use that one to obtain dual monitors on 1 computer? thanks|||only if your motherboard has multiple graphics card slots, however by the sound of your system (graphics cards with single output are old) and your knowledge of it (most people who have motherboards with multiple graphics card slots would know it), i would highly doubt it. if your motherboard has onboard graphics, you can also use that for a second monitor.