If you are talking about rotating ship parts its right there on the lower right of the screen just like in gal civ 2. Also if you don't like using the degree dials like myself you can click on the options button on the bottom. There you can select, "show design gizmos" and you will be able to rotate, enlarge, move up, down, and side to side by dragging the arrows and gyros with your left mouse mouse button.
Rotate whole ship,,,, hold down the mouse wheel button and viola, rotating ship.
If you don't have a mouse wheel or a middle mouse button then maybe it's time to replace that dinosaur.