I am running Tradestation on a double CPU Xeon 2.2, 1G memory computer. When I add more than 200 charts in the TradeStation, the system crashed. The tech guy said that Windows 2000 Professional, which I am using right now, has a limit of 200 objects;so, it is the operating system problem, not the TradeStation software problem, according to them. I am thinking about upgrading the operating system to Windows 2000 Advanced Server, but don't know if that will help. Your opinion will be greatly appreciated.