Damn, so many questions...
About your rotatiion problem asdf, could you send me the moel over? There are many things that can cause that so I would have to have a look at the model to find out what.
For the 45deg spin, I add a camera to the scene (its in the toolbox, in the same area as spotlights, point lights but abole the link and unlink tools). Make sure the camera is set to be square in the object property pallet. I position the camera to have position (x = 0, y = n, z = -n) where n is a value such that the ship fits in the window. Make sure that the ship is centered over (0, 0, 0), and make the ship the camera's target. When you go to render make sure the camera window is the front most.
It should be noted that if you have engine flares, they should not be grouped together with the ship, but instead linked to the ship with the link tool. This means that the ship itself can be positioned at (0, 0, 0) and spun round there, while the flares will act like they are part of the group without changing the group's size (and therefore center.
Anything else?
ewan
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