Rabid Bogling

Worked a charm, thank you.

I've been using Paint.NET for a few months now, and have found it's ease of use bleedin' fantastic. Though of late I've been encountering a problem. While attempting to edit the textures of a game (perfectly legal, the game in question being Mount & Blade by TaleWorlds) I've found that almost all files are either partially or completely obscured by a layer of what appears to be transparency pixels - as such I can't really do anything with them. The files are all of the DDS format. Is this a bug, a common problem, or am I just missing something that should be obvious? I should probably point out that this game is in essence made to be edited by it's players, and nobody else on their forums seem to have encountered the same problem. Any help would be greatly appreciated.