.iwi to .dds converter?

[Peterlankton]

dds2iwi converter is the most awful choice to make.
Though you could try to export the dds with dtx3(you have lots of options to choose from: no-alpha, dxt1, dxt3, dxt5, whatsoever), dxt3 is what you need. You better use the DDS Plugin for Photoshop which is by NVidia if you don't already do.
Then try to convert it with dds2iwi again.
If that doesn't work out use the Assett Manager of CoD2 to get your dds converted into iwi.