First thing is to click on the user control panel icon in the top left of the Board index
Now click on the profile tab
Now click on Edit Avatar on the left hand menu
Now click on choose file next to Upload from your machine (it will need to be maximum 90x90pixels in dimension and max 500kb,
(For how to resize and image go to http://www.tophatyachts.com/viewtopic.php?f=20&t=1350&p=7531#p7531)
Browse to the file you wish to use, select it and click open
Click Submit
Once redirected you should now see your avatar under Current Image