I am trying to connect to my girlfriend's father's Macbook, and you can't connect to his computer, but I can connect to her computer on the same network. I looked at the firewall settings and it has checked "Allow all connections," but I dont know what else it could be. Also, in iChat wen I click his name and go to ask to share his screen, that too is greyed out. Edit: I told them to go to the iChat menu video and click screen sharing, but that is greyed out as well. I can screenshare with her, but not him. The connection doctor has Screen sharing and Multiperson video chat Xed out due to a slow connection. So I guess I shouldn't be able to connect to either of the, but I can connect to hers, so I should be able to connect to his. My other question is about screen name formatting. I'm using my AIM screenname in iChat and I set my screen name format to something like "Name Here" and iChat always formats like "namehere." I tried deleting the profile from iChat and remaking it, but it does the same thing. Thanks for your help!