http://forum.shrapnelgames.com/showthread.php?t=48790
See my post #7
Also
http://forum.shrapnelgames.com/showthread.php?t=49280
And other posts. Its a reasonably common topic, after all and so easily found by a quick search of the forums.
Since the new version of the forum software's search function seems to be rather poor, it's often best to search Google instead.
(your search string) + shrapnel games forums
e.g. - I used
hull down shrapnel games forums
in Google to find the above, and then drilled down into the "show more results" linky under the first few results it threw up as coming from Shrapnel.
Andy