[Suicide Junkie]

You need to get your model saved or converted into .X format.

You then plug the name into starfury, and do some stuff to line up your texture, scale and rotate and whatever.

Add some firing points by their XYZ coords and firing angles. Add some glow lights and blinky lights in a similar way.

Render yourself a couple of B&W overhead shots to use in the displays and inventory screen.
Creating a slot layout isn't hard with my slot modder. The easiest way would be to copy an existing hull, and then drag the slots around until they look good on your ship.

Copy the purchaseships entry from some other ship and edit the turning rate, acceleration, top speed, along with crew capacity & whatnot.

Then you should be good to go.
The one thing I can't help with is getting the model converted to a .X, and rendering the portraits and overhead views you'd want.