Malphas : With GIMP : Load your .png, then filters ==> animation ==> spinny globe, and then just set as you wish. With PS, i think its more or less the same thing. (Save it as .gif animation, of course, with something like 100 or 150ms)
Damn, there are plenty gimp tutorials.. i use photoshop^^There, not spinny but still..=) 2Doft.. I DON'T LIKE GIMP^^srsly i don't like it..
Soo, Munich do you like it?^^