For those of you who receive the attached message on Windows Vista after downloading NinjaTrader, there is a workaround to make NinjaTrader work.
In Windows Vista, look up the 'Windows XP Compatibility Mode' and then with administrator rights NinjaTrader will work with Windows Vista.
More info on how to make it compatible can also be found here:
http://windowshelp.microsoft.com/Win...f5f101033.mspx