Well to actually add a picture you'll need this link:
http://forums.psychcentral.com/profi...editprofilepic which lets you get a picture (avatar) either from your computer, or from another website.
If you have a picture on your computer, you'll need to know where it is saved to be able to link to it, and it will have to be the right size too. There are programs around which re-size pictures for you to the right size.
Otherwise I think the best thing is to look at sites which host avatars. In the past I have used
http://www.avatarity.com/ which has a lot of avatars and even resizes them if needed. Or, you could try posting in the Technical Support forum and asking other people where they get their avatars from. Somebody might be kind enough to volunteer to make one for you