Problem Space plane Design help

[reconwarrior21]

I'm using NASA's VSP software to design a space plane (Hopefully can be carried to altitude by a 747 and then released to Climb to orbit.) But i have no idea how to take a 3d model and turn it into something that will work in orbiter. If anyone would help out that would be great.

 

[cipher169]

Im not an addon developer myself, but i think that this thread might help.