The following set up is for TradeStation Version 8.XX
Setting Up NinjaTrader
1. Start NinjaTrader
2. Select the Tools-->Options menu from the Control Center window
3. Select the ATI tab

4. Set the default account to Sim101 (you can always set this to your live brokerage account later but we recommend leaving it to Sim101)
5. Check "Enable SMTP server" option
6. Set your Order Handling options
7. Set your Stop Order Handling options
6. Connect to your broker via File-->Connect within the Control Center window (make sure you have set up a connection to your broker)
7. Enable the Automated Trading Interface via File-->Automated Trading within the Control Center window (a pale green "ATI" will light up in lower right hand corner of the Control Center window)
Setting Up Proper Symbol Mapping for Continuous Futures Contracts
8. Set your symbol mapping for continuous futures contracts
Setting Up AntiVirus Software
9. Antivirus software which scans outgoing emailing can impair the link between TradeStation and NinjaTrader. If your PC has AntiVirus software installed and scans outgoing mail, each mail notification sent from TradeStation to NinjaTrader will be scanned and therefore add significant delay in automatically processing your trading signals. Please consult your AntiVirus software Help Guide to determine how to disable the scanning of outgoing email.
Setting Up TradeStation Workspace
10. Start TradeStation
11. Select the menu File-->New-->Workspace
12. Set up your workspace options
Setting Up TradeStation Email Notification
13. Add a TradeManager window to your workspace by clicking on the icon on the left pane as per the image below

14. Click once on the TradeManager window that appears then select from the TradeStation main menu View-->TradeManager preferences
15. Select the "Notification" tab as per the image below and select "Strategy Active Order"

16. Press the "Configure..." button to bring up the "Messaging" window as show below

17. Enter the information as shown above; you can press "Test" button which will send a test message to NinjaTrader and show up in the Control Center Log tab.
18. Press "OK"
19. Repeat steps 15 through 17 for "Strategy Canceled Order", "Strategy Filled Order" and "Strategy Replaced Order"
Setting Up a TradeStation Strategy
20. Open a chart(s) of the instrument that you will run your strategy on
21. Right click in the chart and select the menu "Insert Strategy..." and select a strategy

22. Your strategy will appear in the "Format Analysis Techniques & Strategies" window as show above
23. Check the "Generate strategy orders for display in TradeManager's Strategy Orders tab" box and press "Close"
That's it! Your strategy will now be automated for execution through NinjaTrader.