What are you trying to do with the files? If you're trying to edit them, open them in something like GIMP or Photoshop.
"Call yourself alive? I promise you you'll be deafened by dust falling on the furniture,
you'll feel your eyebrows turning to two gashes, and your shoulder blades will ache for want of wings."
- Get GIMP. Specifically GIMP.
- Save As -> Select file type by extension -> TarGA Image (.TGA)
- Save with a different name so you don't overwrite the last one
- Create a spinny head with the original file.
- Save the spinny as an animated .GIF
- Upload it to an image hosting site.
- Display
- Send the .TGA to someone when they buy it
"Call yourself alive? I promise you you'll be deafened by dust falling on the furniture,
you'll feel your eyebrows turning to two gashes, and your shoulder blades will ache for want of wings."
The spinning head must be an animated .GIF.
I would advise you to make the actual head file a .TGA, but it can be a .PNG, .BMP and more besides.
"Call yourself alive? I promise you you'll be deafened by dust falling on the furniture,
you'll feel your eyebrows turning to two gashes, and your shoulder blades will ache for want of wings."
Then you make a spinny head so you can display it in the shop without anyone stealing it.
"Call yourself alive? I promise you you'll be deafened by dust falling on the furniture,
you'll feel your eyebrows turning to two gashes, and your shoulder blades will ache for want of wings."