3Dmax rigging a model tutorial - 08 video - Star Wars Alliance Rebellion mod for Star Wars: Empire at War: Forces of Corruption
Alliance are a serie of different mods. On the Star Wars GC, you can play the civil war Empire vs Rebel era + Black Sun and soon the Republic and CIS.
This video shows you how to add symmetry to one mesh without it. The symmetry is the bigger problem when you are making a UV for a new texture.
On video you will see how I divided the mesh on two parts and I clone one of this, after it I invert the cloned part. Probably you have tried it sometime and you have seen how the texture look very bad on the inverted part. If you watch the video, you can see how easily I fix it. I create a very small box and I attach all the parts from the mesh to this box. It will fix the problem with inverted mesh and your UV will be perfect.
Obviously you can use this system when you make your new models, most of the times you will not need to make more than the half of the model.;)