Quote from OTCkrak:
my desktop has a DVI output and the splitter (1 DVI/1VGA) works perfectly with only a single video card into two monitors.. I'm assuming the analog VGA output is nferior in this regard
This does not seem to make sense to me. If a gadget is truly a "splitter", from its name it only splits out the same VGA (or perhaps DVI) signal from one set of cable into 2 sets of cables. The signal itself is the same. So the 2 monitors hooked up to this gadget would display the same image.
If you want monitor A and monitor B to display different parts of your Windows applications, you would need the hardware that supports 2 DVI or VGA ports.
If your laptop does not have an extra VGA/DVI port outlet, you can use one of the USB-DVI/VGA adapter. I use one to drive a third monitor from my laptop.