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I just want it so I can view three Microsoft Visual Studio windows at one time.<br />
<br />
Is option #4 the cheapest ?
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I just want it so I can view three Microsoft Visual Studio windows at one time.

Is option #4 the cheapest ?

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Yes number 4 is the cheapest.<br />
<br />
One thing I would like to point out... &nbsp;Make sure that the USB to VGA adapter that you choose is compatible with your OS. &nbsp;I bought one that works with XP, but doesn't work in Windows 7, D'oh...
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Yes number 4 is the cheapest.

One thing I would like to point out...  Make sure that the USB to VGA adapter that you choose is compatible with your OS.  I bought one that works with XP, but doesn't work in Windows 7, D'oh...

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Go with nVidia, they support multiple cards better than ATI from my experience.
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Go with nVidia, they support multiple cards better than ATI from my experience.

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<div class="content wysiwyg-content">
I currently have dual monitors <br />
setup on my Windows XP machine<br />
using my dual graphics card.<br />
<br />
How can I add a 3rd monitor <br />
OR do I need to purchase <br />
a TriMonitor graphics card ?
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I currently have dual monitors 
setup on my Windows XP machine
using my dual graphics card.

How can I add a 3rd monitor 
OR do I need to purchase 
a TriMonitor graphics card ?

Windows -- TriMonitor Setup ?

A monitor or a display is an electronic visual display for computers, usually comprised of the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) thin panel, while older monitors used a cathode ray tube (CRT) about as deep as the screen size. They are connected to the computer via VGA, DVI, DisplayPort, Thunderbolt, LVDS or other proprietary connectors and signals.

Displays / Monitors

Microsoft Windows XP is the sixth release of the NT series of operating systems, and was the first to be marketed in a variety of editions: XP Home and XP Professional, designed for business and power users. The advanced features in XP Professional are generally disabled in Home Edition, but are there and can be activated. There were two 64-bit editions, an embedded edition and a tablet edition.