No error messages, no windows, nothing at all?
Has it worked in the past? If so, what has changed since the last time it worked? What have you installed, uninstalled, changed/amended etc?
I strongly advise you to re-apply Norton's firewall. Your computer is very unprotected without it.
What do you use to protect yourself from viruses and spyware?
Have you tried to Restore your syste to a time/date when AIM did work? (Start > All Programs > Accessories > System Tools > System Restore).
When I try to log on to AIM, nothing happens. I have Norton Internet Security, but I disabled that and Windows Firewall is off? What should I do?