ICQ command line switches

My brother and I both have accounts on ICQ. The only problem is that he doesnt like to have to put in a password each time he logs on, and this means that when i log on after he’s been in a session, i get all sorts of offline messages that have been sent to him. This is so annoying to have to change users every time.

So are there any command line switches that will load ICQ with a certain user already selected. This way I could put two seperate shortcuts on the desktop for both of us. Or does anyone have any other suggestions?