Many people don't know this but the "purpose" behind "Windows" is the
ability to view multiple windows or screens so that you can compare,
analyze and share data between the screens.
If you have Windows 98 or newer software (XP is the best for this) it will
handle up to nine screens although most computer are limited by the number of
available PCI slots that you can add extra video cards to. Since you can
view the different data on the screens at the same time and it makes
working with multiple programs much easier. I have set this up for many
people and EVERYONE LOVES IT!
My main computer that I have in my home office is setup with four monitors
and my other PC is equipped with two. Having a PC with at least two monitors makes it very easy for
you
to be researching a product on eBay and have your TurboLister open at the
same time designing the ad that you are making for the product that you
are going to resell on eBay!
Below:
This is my Personal Computer. Note that
all 4 monitors are connected to one computer so I can simply "drag and
drop" the different programs (or windows) to a screen and use one of the
other screens to do something else.



Below:
This is my "training PC" that is in my
home office
next to my main computer. This is how I normally set up a computer for a
local client that I am working with. Everyone that I set this up with
loves it and they have a hard time going back to "the old way" with one
monitor.

If you are going to be adding a second video card to your
computer there are a few things that you need to check in your computer
before you buy one.
-
If
you have a manual or owners guide that came with your computer check it to
see what type of available slots are available on your motherboard. There
are a few different type of slots that might be available in your
computer, the older PCI, AGP 1x, 2x, 4x, etc..... or the newer PCIe (PCI
Express).
I have learned from experience that sometimes if you have a computer with
onboard video, you might have to just buy a card that has two video
outputs on it and disable the onboard video in you computer BIOS.

-
Check to see what type of connector that you have on the end of the
monitor that you own now. There are two different connectors, the older
VGA and the newer DVI that connects to the newer LCD monitors.



There are also small converters that you can purchase if you convert DVI
to VGA or vise versa.
This
is my display setting for my monitors. Note how you can actually put a
monitor under one of the others. They all don't have to be side-by-side.

Below: If you like you
can set them all of your monitors next to each other.

Below: Here is how it will look with two monitors.
