I think we're all agreed upon that one monitor is not sufficient for trading. I've been wrestling with video card, BIOS, operating system and other issues in order to configure my Compaq Presario 5000 to a dual monitor system (see my earlier post). I'm slowly coming to the conclusion that it might be better for me to just buy another PC. A second PC costs more than a monitor plus card plus extra memory, but time is also money, and I still haven't gotten anywhere in the dual monitor scenario. So, apart from the sometimes questionable cost factors, what are the pros and cons of dual monitor vs. 2 PC's for the trader?