wolfcat
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Those are standard *.dds files; the game is from 2006, so where would new technologies come from?
Also, is your startup window in Photoshop like this when you open a *.dds file?
The circular areas indicate the bit depth at which you're opening the texture; the image shows the default setting. You don't need to know what the other areas are for; this is enough to open textures from Heroes 5.
Regarding the issue of a texture not displaying in the game: if you saved the *.dds file in the DXT_3 compressed format, but the *.xdb file specifies 8888, the texture will either display incorrectly or not at all.
In general, I still don't fully understand the relationship and where you specified it.
