You need a picture of your son online and if you right click on the picture the properties will appear then you copy and paste the properties--address/url into the avatar url Line....the properties would be for example:http://mi-cache.legacy.com/legacy/images/Cobrands/StarLedger/Photos/obbi0201tcoleman19_20110201.jpg and that one for example are the properties you see on the left below my name.