go into your profile in the bottom right hand corner and then minimise it, and then go into google search and put pictures of ....... whoever and then save it into your pictures, go back to your profile and click on browse, click on the picture and then press upload, it should work if your picture was 100x100 pixels or lower, you should now see a thing in your profile that sayes signature, write in a signature such as kamehameha and press update go back to forumns and .................
HEY PRESTO
DON'T MAKE ME GET MY BLADES OF CHAOS ON YOU!!