Hi.
Codemaster's titles send the data of the games (speed, gear, accelerations and so on) over the network to an external application. Only one application will receive the data, and it is SImDash, which drives the dashboard, or the D-Box software, that drives the motion simulator.
To get around this limitation you can use this software:
http://www.eksimracing.com/?p=48Basically it is an application that will be configured to receive data from the simulator and it will forward a copy of the data to SimDash and a copy to D-Box software.
The software comes with some instructions for the configuration, but I can help if you have problems.
Support for Need For Speed 2 is not reliable. I have tested the DVD version and worked at the time. I am not sure what happens with the Steam version. NfS2 doesn't have an official API to allow external applications to read data and that's the reason the support of the game is very basic and uses some hacks to work.
Regarding Nitro Stunt Racing, you have to right-click the shortcut to start the game and select Properties. the shortcut is on the desktop probably.
On my Win7 machine I have a "Shortcut" tab in the Properties windows. This tab has a "Target" text that contains the location of the game executable. you have to change the content of the "Target" textbox and append the following parameters:
-config -FD_TYPE 1 -FD_Host 127.0.0.1 -FD_Port 6556
(I have updated the parameters list, before there was an error).
6556 is the port number and you can change it but it must match the port number that is set the in the Nitro Stunt Racing's configuration screen in SimDash.
Then close the Properties window and start the game double clicking the shortcut as usual.
Regards
Cristiano