There are 2 ways to do this. You can take your picture , resize it to 75×75 pixels , put this on your own web space and then edit your profile to link to the picture.
The easy way is to send your picture to Dave Koonce , aka “ecnook”. He will resize it and place the picture on the web server. Then the link from your profile can point to the picture and it will pull it up when you post.
Dino