AOL System Message

Anyone know if there's a way to block the AOL System Message from being sent when you're logged onto more than one place? I'm always going back and forth from my AIM account on my Macbook and my iPhone, and I stay logged onto both continuously because it's just easier that way. I must get that message, like, eight times a day! And of course I get it in both places, *and* an email message as well since I have Beejive forward my missed IMs on my phone. I tried adding it to my Block list but no luck.