SYS built my computer in April with Athlon chip and Matrox G450 DH 32M AGP card and Maxtor (Matrox?) 60G 7200 RPM ATA 133 whateverthehell that is. Anyway, I have 4 Samsung 17" monitors which I use for charting and chat. One plugged into each of the ports in the back. Works great. Can anyone tell me what I need to buy to add a 5th and 6th monitor? I need to add some more space for charts and projects that I work on during the trading day. I do not use this computer for order entry. Thank you. I have no computer skills. Geo. PS: Samsungs are under $500 at Sam's Club now.