Anyone want a little help?

[Radiance]

If you can, always use .dds formats with GXT5 compression. I believe that's preferred. Feel free to enable mipmapping. It makes the textures less pixelated at an angle.

Here is the 512*512 wall texture I wish to replace certain level
https://dl.dropboxusercontent.com/u/1345...xture1.dds
It has bump effect and pixel glow effect.
I was reading some tutorials. I can't just replace it with existent texture and rename it, right?