YUPPI!
I could finally post my picture.
How to do it:
1) go to your profile
2) select "use custom AVATAR" (yes)
3) upload your picture which has to be 100 pixels by 100 pixels (you can make the picture size modifications in the "Microsoft photo Editor" .
and ...that is it! I was breaking my head trying to figure out how to do this...
I cheated this weekend. I have to admit it. Now I feel really bad, because I have gained some (almost 2) pounds.
Need to start all over... grrrrrr.

Hope you had a great weekend...

See ya tomorrow.