Ok Kreeargh, why don't you try this to get your mapping the same on both sides?
Select the faces on the side that you have mapped correctly that you wish to mirror, detach them as a clone and mirror them across the hull. Delete the faces that they will be replacing on the other side. Now it will be mapped the same on both sides. All you have to do then is create either a new texture for that side so that the 5 and other text will read in the correct direction.
(attach the new faces to the old mesh, weld vertices etc)
To add illumination all you have to do in Max is press M, press "get material", select "scene" and double click on one of your textures. Scroll down to the "maps" section of the dialogue box and where it says illumination, click it and you can select what map to use for the illumination. Once you've done that, click "go to parent" and then "show map on viewport".
Hope this is of some help and maes sense to you