I am struggling to get a green connection when hosting on multiplayer fsx SP2 in vista.

I have almost top of the range bt broadband with my computer, it comes through a internt comes into the house through landline into wireless BT hub which is then connected straight to my computer with an ethernat cable (not using the wireless on the BT hub).
Yes all my firewalls are off too when I try to host.

there are even people using a lower grade BT option with less mbps which get green connections... I cannot understand this.

Is there a way I could optimize my connection enough to get a green connection status on multiplayer?.... please help.

Is there any way to overcome it?