First off, for trading purposes is it important to have digital LCDs rather than analog? It seems to be a matter of debate sometimes mentioned in other threads. Is there a definitive answer? Secondly, I currently have a dual head NVidia GeForce4 MX440 (analog) in a PCI slot. If I want to add a third and fourth monitor I will need to buy another card. (I realize I could buy a quad-head card but cost seems prohibitive). I went to CompUSA and the sales rep told me I could NOT add another of the same card, that I would need to have a different chipset card (non-NVidia) like an ATI. Does that sound right? Also, he wasn't sure if my second card would have to be PCI like my present card or if it could be AGP. Any card experts out there that can answer these questions? Those of you who currently are running two or more dual-head cards, are they the same chipset/manufacturer? Are they both PCI or do you have one PCI and one AGP? p.s. If it helps I'm running Windows 2000.