We get a lot of questions about how to post an avatar from members here so I thought I'd post some instructions for those of you who need it.
Here it is step by step:
1. Just a bit below the psychforums logo in the top left hand corner it says "user control panel". Click on those words...
2. The new page comes up and under big heading that says "User Control Panel" in huge letters there is a bunch of tabs to the different controls. The first one says "Overview" then "profile" then "board preferences" etc. Click on the second tab from the left, the one that says "profile"
3. You will see the edit profile page comes up. There is a menu on the left hand side that says "edit profile" then "edit signature" then "edit avatar", click on the one that says "edit avatar".
4. then in the box that says "link off-site" paste in the web address for the image which you wish to use as an avatar, this web address has to be only for the image itself, not for the whole site that the image is on.
5. Click submit. Your avatar should now work.
Troubleshooting: if your avatar didn't appear, it's either because you need to resize it to being smaller, or that you linked to the whole website your image was on rather than just the link to only the image.
Check with your link to the image that the address links only to the image and not the whole site that the image is on, this can be done by right clicking on the image and selecting "copy image address" from the menu (hopefully non-mac users have this option too).
If the problem is a problem with size, you could try downloading the image to your computer and resizing it using some sort of image program and then re-uploading it to a image hosting site. Alternatively, I think you might be able to use google to re-size images because I know you can do that if you have used the image search function in google, there is an option there to display the image in a variety of different sizes.
Good luck!