if you have milkshape all you need to do is import the nif and export to mod. it will take care of everything else if you don't want HP and DPs on the ship. The ship will get allot lighter though there is a bug in milkshapes import/export that causes this, talk to Centrus about that he figured out how to fix the bug in 3DMax.
To get HPs' and DPs' on it import a ship delete the model and then merge this one to it. You will have to select a few of the points to move them onto the model, then you can export it ready to go.
Your best bet to get it done is probably to ask StarForce2 to do it for you, he has done the most conversions between the two games that I know of.