Nokia 5800 was shipped with the Live Messenger originally. After a software update the Messenger is missing, but the Hotmail account was left with the question mark on an blue background. This account has not even been able to be removed.
Recently I tried the WindowsLiveS60 application (Windows Live for Series 60 3rd, 1.0.6164). At first I tried to install the dep.sisx, but the installation ended in an error message. Then I installed the WindowsLive.sis package without any problems. Hotmail account had been removed, even though I didn't start the program. Finally, I removed the WindowsLive.sis package.