Making a flying spaceship

[Parduz]

I have the StarWars add-on, with the Death Star orbiting around Endor.
I want to put Tie-Fighter and X-Fighter flying inside the "channel" of the Death Star.
So i've put a Tie in this manner:

"Tie Fighter" "HD 143761/Endor/Death Star"
{
Class "spacecraft"
Mesh "galileo.3ds"
Radius 0.01
RotationPeriod 10.025

EllipticalOrbit {
Period 0.005
SemiMajorAxis 1600
Eccentricity 0
}

Albedo 10.10
}
(Forget about the albedo and the mesh, it's only the first step).

Flying speed and position are correct, what i can't understand is:
1) Hot to keep the Tie in the correct position? it must fly "parallel" on the surface, but for now it is rotating like a rock....

2) How to put 3 Ties in a "V" formation?

3) There's a way to add a tail to the Tie like for comets?

Thanks!!!

[selden]

Consider reading the Web page http://www.lns.cornell.edu/~seb/celestia/hutchison/defined_locations-130.html