While stefano is correct to some degree about the naming of files used in various shaders there are still unexplained issues. One of the problems you will have is evident in the illuminationmap.fx file. It requires a variety of input for the correct effects to occur. You will notice on about lines 25 - 27 that it is looking for some tga files. I assume that lm.tga is a light map that is generated either by the game at build time or is an input from a light map producing systems such as giles. Having output several games using high settings I have yet to see this file created by the game builder, so I assume the second point is the correct one.
Also illumination.tga is not created by the game builder so I can only assume that this shader will not have an appropriate effect. This problem is evident in a number of other fx shaders including illuminationent and bumpbone.
It would be really cool if one of the DBPro devs such as evolved would get involved and look at how VS2 and PS2 shaders could be incorporated in the game. It would also be nice if one of the TGC coders could shed some light on this as it seems to be one of the big unanswered issues.
there just has to be light at the end of the tunnel, even if its only a birthday candle....and cake!