zchat editing did not work, Rename did not work, blp seem to work but the convertion ( at least i think that's the problem) did not work:
http://www.abload.de/img/chathwrwv.png
I used:
http://wc3r.forumcircle.com/viewtopic.php?t=4075
My tga files were saved at 32 bit and tested 16bit also and are uncompressed 32x32 res.
:/