...and you have a DVD player on the computer, then the monitor acts much like television screen.. You'll need those 3D glasses.
On the other hand, there are 3D games and animated movies which have the ability to be 3D using the computer's graphics card abilities.. If that is the case, then you won't need any special glasses at all. Just a good graphics card.
Hope this helps.
I want to know if i can watch a 3d movie on my PC. I do have the 3D glasses. I want to know what else I need.