Hi, i was jw...?

okay, i just got a new sn. on aim (twilightgirl13). i had a different one (wicca232), but i wanted two. so anyways, only my wicca232 buddy window comes up. how can i get my twilightgirl13 to come up instead. i have tried signing out of it and everything, but it doesnt seem to work? how can i get twilightgirl13's buddy window to pop up instead?