Alright, let's say you have five different images you want as your avatar. You would upload these to your site as
Code:http://www.yoursite.com/avatar1.gif
http://www.yoursite.com/avatar2.gif
http://www.yoursite.com/avatar3.gif
http://www.yoursite.com/avatar4.gif
http://www.yoursite.com/avatar5.gif
So basically the only difference between the images is the number. You can use any names like image1.jpg, image2.jpg and so on.
Then you would go to your edit profile page and enter this:
Code:http://www.yoursite.com/avatar[random]1, 5[/random].gif
That will change tha random tags to a number between 1 and 5 each time someone views one of your posts.
So a real example then. I have two different pictures as my avatar, which I uploaded to
Code:http://icey.gouranga.com/avatar1.gif
http://icey.gouranga.com/avatar2.gif
So the code I use is:
Code:http://icey.gouranga.com/avatar[random]1, 2[/random].gif