Go up to the top of the page, and click on "user cp"., after you click on that, go to "edit profile", then scroll to where it says "Signature" and put this in the box:

[*IMG]http://img.photobucket.com/albums/v147/molucass/SigsAvs/heidisig1.jpg[*/IMG]

Just remove the stars * out of the brackets that say "IMG".
Then after you put that in the signature box, scroll down to the bottom and click on "Submit Modifications."

For the avatar, click on "Edit Options", then scroll to the bottom and click on "Change Avatar", after you do that, in the box that says "You can enter an URL of your avatar:", click in that box, and put this there:

http://img.photobucket.com/albums/v1...vs/heidiav.gif