Wow thanks everybody for all your ideas. Markschum I will give the CR2 editing a go I like the idea of a seperate dial to control the steering of the seperate objects. As Plutom states I know it can be done because most car models for sale here include this feature. I have managed to build the car in a 3d package and import it. The next step is picking the bits of Poser I need to add to create a bit more functionality.  This is an excellent headstart :-)

Thanks for the quick response I assume those dependent parameters will be in Poser 7 . Time to experiment.

Update:- For anybody else with non existent programming skills like me this does the job

http://www.renderosity.com/mod/bcs/index.php?ViewProduct=68753

I had a feeling it might be something along those lines. Thanks for the input I will do a bit more searching to see if I can find a script out there.