Screen name fiasco

Okay here is the run down. Just five days ago I got a new computer with WinXP. I had Win98 before and all ten of my screen names worked. Now two of them will not allow me to sign on for the life of me. I have tried re-installing AIM and Dead AIM ver 3.8, but no help was found there. I had AIM send me my passwords and there was no difference. The problem persists a lot when I try to clone AIM, cause when I sign on regularily one of the problem names work, but the clone will not let those two work. I was thinking that it was AIM’s fault, but it has been five days now, and why would 2 out of ten not work? Any Help????