To add your avatar, first you will need to sign into your account at www.GoComics.com. Once you have logged in, you will see "Howdy *Your username*" at the top left corner of the screen. Underneath this spot, you will click on the hyperlink which says "My Account".
Once you click on this link, you will be taken to a new screen. Again, in the top left corner, underneath the area where your avatar would be located, you will see a hyperlink which says "Update Avatar". Click here, and you will open a dialogue box which will allow you to browse for your photo.
There are several requirements for your avatar file, Your file must be smaller than 2MB, the file type can only be JPEG, GIF, PNG, or TIF, and the image must not contain anything vulgar. Once you have chosen your file, select "Submit" and your avatar will be uploaded! (If it meets all requirements).