right click on the one I posted, hit the save picture as button, and save it somewhere you can find it like your desk top.
then go to the control panel and go to the avitar section. At the bottom there is a box for a custom avitar. Choose that and then browze and find the picture where you stored it above. Click save profile.
It will take a minute or so to process and you'll have it. I just verified that it worked and it is now my avitar. i will change it in a little bit but left it to prove it works.