My current setup is a relatively new MB/CPU, and an ancient graphics card running 2 monitors (business applications, in virtual machines, no gaming and no video editing). For a while I've been considering adding 2 more monitors to have a 2x2 setup, but realize my current card isn't sufficient, and my MB does not support integrated graphics. If I start looking for deals on a low-end graphics card (with the intent of getting 2 matching cards), is there anything I need to know in advance? If I just plug in 2 cards can I expect to get 4 monitors up and running fairly easily, or will only certain cards work that way?