Hey friends, please, follow the steps:
1) Get a transparent gif (http://www.linuxit.com.br/images/topics/linuxpqn.gif, by example)
2) Set as MSN Live Messenger user image
3) The image is with the correct transparent background
4) Now, open in PaintDotNet
5) I cut the "LINUX" word
6) Save or Save as
7) PaintDotNet (and the Windows Picture Viewer) shows the image with the correct transparent background but...
8) If you set this image as user image in MSN Live Messenger, shows a black background
I have missed something?
Regards