Hey Bill.  Check on Amazon or Ebay for a Matrox Quad Card, and if you can get someone to add/install the card, you can use 4 monitors with one PC.   Do a little research to make sure you get the right one.  My friend got one from an Ebay seller in England for less than $50, and says it's worked great for years.

    Bill - if your pc

    Posted by cwa82675 on 14th of Jul 2009 at 03:23 pm

    Bill - if your pc has any pci expansion slots you can stick another pci based video card in there and have 4 monitors running off one computer. It will cost you about $50 for a decent card. 

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