Using Commoditized Computers Setups for Stock Trading?

An anonymous reader asks: "Thanks to Walmart, TigerDirect, and Gnu/Linux, I can get computers at about $200 now. Thanks to Matrox, I have several multi-head video cards. Thanks to a hacker's convention last year, I have a truckload of monitors that haven't been put to use yet. I've been out of the financial markets since 1996. I'm itching to get back in now, especially since conditions will be very favorable shortly. Since I've lost my shirt in the markets already (most investors/traders loose their shirts at least once before striking it rich, and my beating was especially instructive), I'm now ready for better returns. Gnu/Linux is well known to support multiple monitor setups. I've seen 4 monitor setups per box in some financial firms, and I recently read a story on the National Weather Service using 3 monitor setups on another OSDN channel. I've also used a Quotrek trading monitor in the past, for monitoring stocks and other financials in real-time. This was before I was a penguinista. Now that I know a bit about Linux systems, I'd like to know the following: What Gnu/Linux applications can I use to monitor and/or process stocks, options, bonds, financial news, and other related information via low cost Gnu/Linux computing solutions, broadband, and multi-head video cards? Free software only, please"

"I'm not going back to paying hundreds of dollars per month like I did for my Quotrek (an FM receiver for stock quotes, possibly discontinued), or paying many hundreds for proprietary software that may not get the job done, or can't be modified or supported by the community. What free software applications do you use? What is a good multi-monitor layout? Any free software that picks up financial broadcast signals and decodes to a computer screen? Any slashdot tycoons want to help out other Slashdot readers?"

Re:Ummm

[spectral]

No, see.. the point is, he'll be doing all this stuff trying to get it to work. By the time it's all set up perfectly, the market will have slumped again. He'll then let the setup go to pasture, then when it's about ready to climb again, he'll work on this, miss that one, ad inifitum.

Therefore, this IS his way of not getting financially burned again, as long as he realizes when the market's headed for a downward spiral :)