Okay, I will try to help.
Click on the "Profile" button.
Click "Forum Profile Information" under "Modify Profile".
Choose any image on the web by right clicking and copying its address.
Click on the white circle marked "I have my own pic:"
Paste the address in the white box next to it.
Click "Change Profile" at the bottom of the page.
That should do it. Sorry, I have a tendency to confuse people.