You said the only thing missing was the skin.
Well I know that problem since I'm just not a good shot at skinning.
Guess you'll have to either learn it by yourself wich I strongly suggest, or look out for someone who does all the dirty work 'forya.
I recon that you were using MS3D making the model and therefore I assume the thing aint UVW mapped yet.
An easy solution would be cutting the Tie Fighters skin to fit to your model...
ah well just suggestions