Mine seems to work fine with it. I'm using a plug-and-play stick from Trust:
![](http://computerempire.co.uk/images/uploads/JOYSTICK.jpg)
I cannot test it right now but I believe I had to fiddle with the calibration to set the throttle right. Because the 0% position of the throttle made my ships sail backwards.
![Doh! :doh:](http://forum.shipsim.com/Smileys/default/doh1.gif)
So in general I would say yes, the game supports Joysticks, but the effect differs from each manufacturer.