ok here it is the little tutorial i tink :)
say we want to make one .utx with 3 groups, each for one weapon
so we first start with the first group by adding all its texture to it
after imported the texture as dxt3 or dx1 or wath you are using for project you have to set the settings on it but this is only for those that know about the gif stuff and other functions
ok now create but don't set yet, just create the texpanners, envmaps, combiners, shaders, finalblends or watever you use or need
now set the panners and other stuff but not yet the shaders and final blends
after you set all the stuff excepting the shaders and final blend you do this
open final blend and set the FrameBufferBlending to FB_Overwrite, ZWrite to True, AlphaTest to True, TwoSided to True in most cases, AlphaRef i usefull too just test and if you don't know just use say 75
now you arive at Material to link the shader you want to use but first click on the cube that you see the window view (its importans in some cases and i tink thats the bug)
now you can link the shader and after you linked it will apear to the right so you can navigate from there you can click on it from there and start set texture and options as you want depending on wath effect you want
there are some limitations i tink if you use combiners
for example you can use 3 panners and 2 combiners so you wil have one combiner that will have one panner and one combiner that haves another 2 panners
i have posted some weapons and you can use them as example
good luck :)
sory bad english you guys :(