techie question

So... does anybody around here know how I can switch my icon for just one entry, without it changing all the others to the same thing? Or does it not work that way? I've got a few cool icons now, and I'd like to be able to switch as my mood dictates...

And are any of you SCA folk going to Peasant's Revel this weekend? I wanna go, but if nobody else is going then maybe I'll go to the beach house with my roommate and some of her friends. I heard so much about this event, though, last year, and I can actually make it this year!