I have four computers in my home and when I am on the road with my iPad I would like to be able to connect to anyone of them at any time. I have one computer running Tiger, two running Leopard and one running Snow Leopard. They are all behind an Airport Extreme using DHCP from Comcast. Here is what I have done so far: 1) I have obtained individual host names for each of them from dyndns.com. 2) I have downloaded Mocha VNC Lite for my iPad. 3) I have turned Remote Management in the Sharing Prefs and under 'computer settings' selected 'VNC viewers may control....' and password protected it. 4) I have gone into Airport Utility: manual setup, advanced, port mapping and set up apple remote desktop to one of the computers and this is where I get stuck......... ......when I try to create another port mapping link to a different computer (i.e. private IP address) I get an error. I know I can't use port 5900 for all of them but how do I set port 5901 for instance and how do I tell the computer I am trying to access that it should use that port? Or is this the wrong solution all together?