I'm completed my analysis of the texture files found in the Sims 2 Body Shop package files.
Aside from the obvious TGA files, there are a large number of other textures. (The same as those found in the .package files when creating a custom skin)
These are actually DirectX DXT compressed textures with a custom header on top. All we need to do to convert them to standard DDS files is work out the DDS header information from the existing information.
It saves me having to write a decompression routine at any rate :D
If these are DXT compressed textures with a custom header, its most probable that they are FSH textures, the same things used in SimCity 4. Let me know what the type ID's of some sample files are, and I'll double check.
Not all FSH files have pallettes. FSH files that contain DXT planes don't store a palette, just the directory and the DXT images. I'll take a look at the files once datgen.info is done, and see if they are FSH's.