Multiplex PC would be a good start. They have a good selection and a fast turnaround on their products. Here is a direct link to their Multiple Monitor page.
http://www.multiplexpc.com/multiple-monitor-arrays-s/1.htm
Here are some you tube and other links to check out as well.
http://www.YouTube.com/multiplexpc
http://www.multiplexpc.com
http://www.multiple-screens.com
http://www.multiplemonitorpc.com
http://multiplexpc.blogspot.com
http://multiple-screens.com/index.php/multiple-monitor-blog.html
Multiplex PC has a vast array of trading computers for todays business needs. Whether you're into stocks, forex, or any other highly time critical trading profession, you need a multiple monitor system that is dependable. Here is a direct link to the computers at Multiplex PC.http://www.multiplexpc.com/multiple-monitor-day-trading-computers-s/111.htmHere are some Multiple Monitor related links as well.http://www.youtube.com/multiplexpchttp://www.multiplexpc.comhttp://www.multiple-screens.comhttp://www.multiplemonitorpc.comhttp://multiplexpc.blogspot.comhttp://multiple-screens.com/index.php/multiple-monitor-blog.html
If you have two 19" LCD monitors buy dual mount monitor back, this will will give your display setup a professional look.
Buy a new monitor
You could buy a cardio montior online at amazon.com. Amazon is a great website because it allows you to compare prices for multiple products and it offers low prices.
There are many places where one can buy a new monitor speaker. One can buy a new monitor speaker from popular on the web sources such as Best Buy, Amazon, and Target.
There are actually several sites that offer multi monitor computer systems and monitor stands (arrays) and adapters. The best one I have come across seems to be www.multiplexpc.com. They have a large array of computers and adapters for multi screen use. Check'em out. I hope this answer helps you out!
One can get a dual monitor wallpaper from various homing stores such as Best Buy. You can also buy a dual monitor wallpapers from online websites that sell them.
you buy a pogo stick.
the Monitor either doesn't come with speakers, Then you have to buy some. Hope this helped you :)
You can buy a desk that allows for an attachment for a monitor mount. Usually the mount attachments are sold separately.
if you are talking about the setup of the nitrous i would suggest a balanced setup or a length setup if you use it a lot or the power setup if you use it in short bursts. p.s: this is for PS2
u can buy them at best buy.