I have looked in Help but it wasn't any.
Just go to gravatar.com and change it
from the help:
[i]The little picture in your profile is known as an Avatar. We use a service called Gravatar to host the images for us, and make sure they are safe for work.
To set your avatar just go to gravatar.com and signup. You can then set different pcitures for different email addresses. So use your singletrack account email address with Gravatar so they link.
Once you’ve done that it will take a little while for your picture to run down the interpipes, but once it has it will appear in your profile.
Gravatar also have a help page at gravatar.com/site/faq/ that will tell you more than we can/will.[/i]
Oh, thanks, I didn't realise it was a gravatar, ages since I set it.