[Lejo]

Sorry I only just read his reply.

You need this:
http://www.sas1946.com/main/index.php/topic,1110.0.html

Which is what I think DM posted.

The programs are different in appearance, maybe the one DM posted is an updated one?

Both programs will convert unreadable/invisible .tga's into visible ones ready to edit. I used to work with Dr. Jones .tga converter but the one from SAS1946 is much more userfriendly. Just select your .tga, click "View" and next "SaveTGA". That's it.