Can anyone help me?? I have just bought my first Mac, a 20" iMac G5 with inbuilt iSight. I am trying to get it to work with aMSN but I keep getting the message which says 'you are behind a router or a firewall' etc. I understand I need to do some 'port forwarding' (whatever that is...) and when I log in to configure my router (about which I know very little, though that is probably apparent), the information it asks for is as follows: 1. Service - options are (i) select from a long list including AUTH, DNS, HTTP, HTTPS etc etc, or (ii) manual service, which will let me type what I want 2. Protocol - options are TCP or UDP 3. External port (port or port-port) 4. Internal port (port or port-port) 5. Server IP address I would be so grateful if anyone can shed any light on the above. I have also disabled the firewall put in place by my ISP. Pleeeeeeeeeeeeeeeeeeease!!