Thanks for that pic Machem.
Once you click on your profile settings you need to add the link to the photo you wish to use as your avatar. This pic needs to be saved on a photo site like photobucket. For best pic quality it should be saved the proper size as well.
Once you have done that all you need to do is copy the link properties and paste them in the section that says Use my own avatar, if the pic shows up as a big red X, then add the img tag and the /tag in brackets at the beginning and end of the link properties.
Need any more help, just let me know.