ok here is something i did to improve the skin of the project 641 Foxtrot mod: open the submarines .DAT withs s3d, export all the 3d-modles from the nodes. open the models - one by one - with milkshape or whaterver and save them withe the same name but with -uv2.obj so they are being recognized by the editor as second (ambient occlusion) layer. export the models skin/texture as well and open it with gimp or photoshop. add a greyscaled map of the texture, adjust the color-curves so there is more contrast and least white areas,then copy it into the texture`s the alpha-channel and save it as dds. reload the models into the s3d editor and add the new map with an AO-texture-map applied to the texture-node. voila a fake ao and better hull detail, even some reflection.
see:
http://www.subsim.com/radioroom/show...ar+Map+Stanger
http://www.subsim.com/radioroom/show...+659T%2FECHO+I
and:
http://www.subsim.com/radioroom/show...ROT+mOD&page=3