Shadow, using the DirectX (JT) exporter in Milkshape, the only thing I alter is 'Position Scaling'. The default is 0.1 which I increase to 1. Everything else is left at zero. The only other thing to watch out for is if your texture has words or numbers on it, and they're coming out backwards in FPSC. In that case you need to either check or uncheck 'Right Handled' - depending on what type of DirectX format you're exporting to. Heh, nothing's ever straightforward eh?
'DirectX Retained Mode' is what you want to use for static, non-animating entities, and generally you'll want 'Right Handled' unchecked. If the mesh is animated, you'll need 'DirectX Skin and Bones' format, and Right Handled should usually be checked. I say 'generally' and 'usually' because results can vary depending on the 3D software used to make the model in the first place.
Cheers
- Graham